diff --git a/code/fast_atof.h b/code/fast_atof.h
index 0f3536c37..0d4952c46 100644
--- a/code/fast_atof.h
+++ b/code/fast_atof.h
@@ -215,7 +215,7 @@ inline uint64_t strtoul10_64( const char* in, const char** out=0, unsigned int*
 }
 
 // Number of relevant decimals for floating-point parsing.
-#define AI_FAST_ATOF_RELAVANT_DECIMALS 10
+#define AI_FAST_ATOF_RELAVANT_DECIMALS 15
 
 // ------------------------------------------------------------------------------------
 //! Provides a fast function for converting a string into a float,