diff --git a/newlib/libm/math/sf_cos.c b/newlib/libm/math/sf_cos.c
index 8cb0eb008..fa472b173 100644
--- a/newlib/libm/math/sf_cos.c
+++ b/newlib/libm/math/sf_cos.c
@@ -16,12 +16,6 @@
 #include "fdlibm.h"
 #if __OBSOLETE_MATH
 
-#ifdef __STDC__
-static const float one=1.0;
-#else
-static float one=1.0;
-#endif
-
 #ifdef __STDC__
 	float cosf(float x)
 #else