diff --git a/crypto777/OS_portable.h b/crypto777/OS_portable.h
index 362432e8d..8c109e5d0 100755
--- a/crypto777/OS_portable.h
+++ b/crypto777/OS_portable.h
@@ -115,7 +115,7 @@ int32_t hseek(HUFF *hp,int32_t offset,int32_t mode);
 #define GENESIS_SECRET "It was a bright cold day in April, and the clocks were striking thirteen."
 
 #define SATOSHIDEN ((uint64_t)100000000L)
-#define dstr(x) ((double)((x)) / SATOSHIDEN)
+#define dstr(x) ((double)(x) / SATOSHIDEN)
 
 #define SMALLVAL 0.000000000000001
 
diff --git a/iguana/exchanges/mm.c b/iguana/exchanges/mm.c
index db8bc57b7..a0641f839 100644
--- a/iguana/exchanges/mm.c
+++ b/iguana/exchanges/mm.c
@@ -115,6 +115,11 @@ int main(int argc, const char * argv[])
 {
     char dirname[512],*passphrase; double incr; cJSON *retjson;
     OS_init();
+    {
+        cJSON *test = cJSON_CreateObject();
+        jaddnum(test,"test",-5);
+        printf("test (%s)\n",jprint(test,0));
+    }
     if ( strstr(argv[0],"btc2kmd") != 0 && argv[1] != 0 )
     {
         uint8_t addrtype,rmd160[20],rmd160b[20]; char coinaddr[64],coinaddr2[64];
diff --git a/includes/cJSON.h b/includes/cJSON.h
index 999f5ce21..db9b2fc72 100755
--- a/includes/cJSON.h
+++ b/includes/cJSON.h
@@ -31,7 +31,7 @@
 #include "../crypto777/OS_portable.h"
 
 #define SATOSHIDEN ((uint64_t)100000000L)
-#define dstr(x) ((double)((x)) / SATOSHIDEN)
+#define dstr(x) ((double)(x) / SATOSHIDEN)
 #define MAX_JSON_FIELD 4096 // on the big side
 
 #ifdef __cplusplus