diff --git a/source/lib/predicates/number.ts b/source/lib/predicates/number.ts
index c29886e..2ff770e 100644
--- a/source/lib/predicates/number.ts
+++ b/source/lib/predicates/number.ts
@@ -150,7 +150,7 @@ export class NumberPredicate extends Predicate<number> {
 		const end = 255;
 
 		return this.addValidator({
-			message: (value, label) => `Expected ${label} to be an integer in range [${start}..${end}], got ${value}`,
+			message: (value, label) => `Expected ${label} to be an integer in the range ${start}...${end}, got ${value}`,
 			validator: value => is.integer(value) && is.inRange(value, [start, end])
 		});
 	}
@@ -163,7 +163,7 @@ export class NumberPredicate extends Predicate<number> {
 		const end = 65535;
 
 		return this.addValidator({
-			message: (value, label) => `Expected ${label} to be an integer in range [${start}..${end}], got ${value}`,
+			message: (value, label) => `Expected ${label} to be an integer in the range ${start}...${end}, got ${value}`,
 			validator: value => is.integer(value) && is.inRange(value, [start, end])
 		});
 	}
@@ -176,7 +176,7 @@ export class NumberPredicate extends Predicate<number> {
 		const end = 4294967295;
 
 		return this.addValidator({
-			message: (value, label) => `Expected ${label} to be an integer in range [${start}..${end}], got ${value}`,
+			message: (value, label) => `Expected ${label} to be an integer in the range ${start}...${end}, got ${value}`,
 			validator: value => is.integer(value) && is.inRange(value, [start, end])
 		});
 	}
@@ -189,7 +189,7 @@ export class NumberPredicate extends Predicate<number> {
 		const end = 127;
 
 		return this.addValidator({
-			message: (value, label) => `Expected ${label} to be an integer in range [${start}..${end}], got ${value}`,
+			message: (value, label) => `Expected ${label} to be an integer in the range ${start}...${end}, got ${value}`,
 			validator: value => is.integer(value) && is.inRange(value, [start, end])
 		});
 	}
@@ -202,7 +202,7 @@ export class NumberPredicate extends Predicate<number> {
 		const end = 32767;
 
 		return this.addValidator({
-			message: (value, label) => `Expected ${label} to be an integer in range [${start}..${end}], got ${value}`,
+			message: (value, label) => `Expected ${label} to be an integer in the range ${start}...${end}, got ${value}`,
 			validator: value => is.integer(value) && is.inRange(value, [start, end])
 		});
 	}
@@ -215,7 +215,7 @@ export class NumberPredicate extends Predicate<number> {
 		const end = 2147483647;
 
 		return this.addValidator({
-			message: (value, label) => `Expected ${label} to be an integer in range [${start}..${end}], got ${value}`,
+			message: (value, label) => `Expected ${label} to be an integer in the range ${start}...${end}, got ${value}`,
 			validator: value => is.integer(value) && is.inRange(value, [start, end])
 		});
 	}
diff --git a/source/test/number.ts b/source/test/number.ts
index 7f88ae5..670c0f4 100644
--- a/source/test/number.ts
+++ b/source/test/number.ts
@@ -86,47 +86,47 @@ test('number.integerOrInfinite', t => {
 test('number.uint8', t => {
 	t.notThrows(() => m(0, m.number.uint8));
 	t.notThrows(() => m(255, m.number.uint8));
-	t.throws(() => m(-1, m.number.uint8), 'Expected number to be an integer in range [0..255], got -1');
-	t.throws(() => m(1.5, m.number.uint8), 'Expected number to be an integer in range [0..255], got 1.5');
-	t.throws(() => m(256, m.number.uint8), 'Expected number to be an integer in range [0..255], got 256');
+	t.throws(() => m(-1, m.number.uint8), 'Expected number to be an integer in the range 0...255, got -1');
+	t.throws(() => m(1.5, m.number.uint8), 'Expected number to be an integer in the range 0...255, got 1.5');
+	t.throws(() => m(256, m.number.uint8), 'Expected number to be an integer in the range 0...255, got 256');
 });
 
 test('number.uint16', t => {
 	t.notThrows(() => m(0, m.number.uint16));
 	t.notThrows(() => m(65535, m.number.uint16));
-	t.throws(() => m(-1, m.number.uint16), 'Expected number to be an integer in range [0..65535], got -1');
-	t.throws(() => m(1.5, m.number.uint16), 'Expected number to be an integer in range [0..65535], got 1.5');
-	t.throws(() => m(65536, m.number.uint16), 'Expected number to be an integer in range [0..65535], got 65536');
+	t.throws(() => m(-1, m.number.uint16), 'Expected number to be an integer in the range 0...65535, got -1');
+	t.throws(() => m(1.5, m.number.uint16), 'Expected number to be an integer in the range 0...65535, got 1.5');
+	t.throws(() => m(65536, m.number.uint16), 'Expected number to be an integer in the range 0...65535, got 65536');
 });
 
 test('number.uint32', t => {
 	t.notThrows(() => m(0, m.number.uint32));
 	t.notThrows(() => m(4294967295, m.number.uint32));
-	t.throws(() => m(-1, m.number.uint32), 'Expected number to be an integer in range [0..4294967295], got -1');
-	t.throws(() => m(1.5, m.number.uint32), 'Expected number to be an integer in range [0..4294967295], got 1.5');
-	t.throws(() => m(4294967296, m.number.uint32), 'Expected number to be an integer in range [0..4294967295], got 4294967296');
+	t.throws(() => m(-1, m.number.uint32), 'Expected number to be an integer in the range 0...4294967295, got -1');
+	t.throws(() => m(1.5, m.number.uint32), 'Expected number to be an integer in the range 0...4294967295, got 1.5');
+	t.throws(() => m(4294967296, m.number.uint32), 'Expected number to be an integer in the range 0...4294967295, got 4294967296');
 });
 
 test('number.int8', t => {
 	t.notThrows(() => m(-128, m.number.int8));
 	t.notThrows(() => m(127, m.number.int8));
-	t.throws(() => m(-129, m.number.int8), 'Expected number to be an integer in range [-128..127], got -129');
-	t.throws(() => m(1.5, m.number.int8), 'Expected number to be an integer in range [-128..127], got 1.5');
-	t.throws(() => m(128, m.number.int8), 'Expected number to be an integer in range [-128..127], got 128');
+	t.throws(() => m(-129, m.number.int8), 'Expected number to be an integer in the range -128...127, got -129');
+	t.throws(() => m(1.5, m.number.int8), 'Expected number to be an integer in the range -128...127, got 1.5');
+	t.throws(() => m(128, m.number.int8), 'Expected number to be an integer in the range -128...127, got 128');
 });
 
 test('number.int16', t => {
 	t.notThrows(() => m(-32768, m.number.int16));
 	t.notThrows(() => m(32767, m.number.int16));
-	t.throws(() => m(-32769, m.number.int16), 'Expected number to be an integer in range [-32768..32767], got -32769');
-	t.throws(() => m(1.5, m.number.int16), 'Expected number to be an integer in range [-32768..32767], got 1.5');
-	t.throws(() => m(32768, m.number.int16), 'Expected number to be an integer in range [-32768..32767], got 32768');
+	t.throws(() => m(-32769, m.number.int16), 'Expected number to be an integer in the range -32768...32767, got -32769');
+	t.throws(() => m(1.5, m.number.int16), 'Expected number to be an integer in the range -32768...32767, got 1.5');
+	t.throws(() => m(32768, m.number.int16), 'Expected number to be an integer in the range -32768...32767, got 32768');
 });
 
 test('number.int32', t => {
 	t.notThrows(() => m(-2147483648, m.number.int32));
 	t.notThrows(() => m(2147483647, m.number.int32));
-	t.throws(() => m(-2147483649, m.number.int32), 'Expected number to be an integer in range [-2147483648..2147483647], got -2147483649');
-	t.throws(() => m(1.5, m.number.int32), 'Expected number to be an integer in range [-2147483648..2147483647], got 1.5');
-	t.throws(() => m(2147483648, m.number.int32), 'Expected number to be an integer in range [-2147483648..2147483647], got 2147483648');
+	t.throws(() => m(-2147483649, m.number.int32), 'Expected number to be an integer in the range -2147483648...2147483647, got -2147483649');
+	t.throws(() => m(1.5, m.number.int32), 'Expected number to be an integer in the range -2147483648...2147483647, got 1.5');
+	t.throws(() => m(2147483648, m.number.int32), 'Expected number to be an integer in the range -2147483648...2147483647, got 2147483648');
 });