diff --git a/libavfilter/vf_unsharp.c b/libavfilter/vf_unsharp.c
index 94bc6019de..9b659bdf00 100644
--- a/libavfilter/vf_unsharp.c
+++ b/libavfilter/vf_unsharp.c
@@ -36,8 +36,6 @@
  * http://www.engin.umd.umich.edu/~jwvm/ece581/21_GBlur.pdf
  */
 
-#include <float.h> /* DBL_MAX */
-
 #include "avfilter.h"
 #include "formats.h"
 #include "internal.h"