diff --git a/include/lmms_math.h b/include/lmms_math.h
index 156303136..3d23abcd3 100644
--- a/include/lmms_math.h
+++ b/include/lmms_math.h
@@ -132,7 +132,7 @@ static inline int fast_rand()
 
 //! @brief Takes advantage of fmal() function if present in hardware
 static inline long double fastFmal( long double a, long double b, long double c ) {
-#ifdef FP_FAST_FMAF
+#ifdef FP_FAST_FMAL
 	#ifdef __clang__
 		return fma( a, b, c );
 	#else
@@ -158,7 +158,7 @@ static inline float fastFmaf( float a, float b, float c ) {
 
 //! @brief Takes advantage of fma() function if present in hardware
 static inline double fastFma( double a, double b, double c ) {
-#ifdef FP_FAST_FMAF
+#ifdef FP_FAST_FMA
 	return fma( a, b, c );
 #else
 	return a * b + c;