diff --git a/cucul/math.c b/cucul/math.c
index 15aec7d..bc5b3d0 100644
--- a/cucul/math.c
+++ b/cucul/math.c
@@ -26,8 +26,6 @@
 #include "cucul.h"
 #include "cucul_internals.h"
 
-static float powf_internal(float x, float y);
-
 /**
  * \brief Generate a random integer within a range.
  *