diff --git a/test/TestHelper.cpp b/test/TestHelper.cpp
index fcca46308..a2e1eaf1b 100644
--- a/test/TestHelper.cpp
+++ b/test/TestHelper.cpp
@@ -549,6 +549,8 @@ Options::Options()
 		}
 		else if (arg == "--vmtrace")
 			vmtrace = true;
+		else if (arg == "--filltests")
+			fillTests = true;
 		else if (arg == "--performance")
 			performance = true;
 		else if (arg == "--quadratic")
diff --git a/test/vmArithmeticTestFiller.json b/test/vmArithmeticTestFiller.json
index 81dbf052b..19224cc2e 100644
--- a/test/vmArithmeticTestFiller.json
+++ b/test/vmArithmeticTestFiller.json
@@ -4847,6 +4847,35 @@
         }
     },
 
+    "signextend_Overflow_dj42": {
+        "env" : {
+            "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6",
+            "currentNumber" : "0",
+            "currentGasLimit" : "10000000",
+            "currentDifficulty" : "256",
+            "currentTimestamp" : "1",
+            "currentCoinbase" : "2adc25665018aa1fe0e6bc666dac8fc2697ff9ba"
+        },
+        "pre" : {
+            "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6" : {
+                "balance" : "1000000000000000000",
+                "nonce" : "0",
+                "//" : "{ asm PUSH1 0x05 JUMP JUMPDEST STOP JUMPDEST PUSH2 0x8000 DUP1 PUSH9 0x01000000000000001 SIGNEXTEND PUSH2 0x8001 GT PUSH1 0x03 JUMPI PUSH4 0xbadf000d PUSH1 0x11 SSTORE}",
+                "code" : "0x6005565b005b61800080680100000000000000010b6180011160035763badf000d601155",
+                "storage": {}
+            }
+        },
+        "exec" : {
+            "address" : "0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6",
+            "origin" : "cd1722f2947def4cf144679da39c4c32bdc35681",
+            "caller" : "cd1722f2947def4cf144679da39c4c32bdc35681",
+            "value" : "1000000000000000000",
+            "data" : "",
+            "gasPrice" : "100000000000000",
+            "gas" : "1000000"
+        }
+    },
+
     "not1": {
         "env" : {
             "previousHash" : "5e20a0453cecd065ea59c37ac63e079ee08998b6045136a8ce6635c7912ec0b6",