sm scroll

diff --git a/gtk/gtkeventcontrollerscroll.c b/gtk/gtkeventcontrollerscroll.c
index 1738e0173f9c7a0249d4600de328679e9b0a5a74..db98d7c51ab572f671dcb4238e794949f44dcd6e 100644 (file)
--- a/gtk/gtkeventcontrollerscroll.c
+++ b/gtk/gtkeventcontrollerscroll.c
@@ -60,6 +60,8 @@
  **/
 #include "config.h"
 
+#include "math.h"
+
 #include "gtkintl.h"
 #include "gtkwidget.h"
 #include "gtkeventcontrollerprivate.h"