diff --git a/src/mod/applications/mod_avmd/mod_avmd.c b/src/mod/applications/mod_avmd/mod_avmd.c
index 69cb2e3fb7..5a5e7ffe2e 100644
--- a/src/mod/applications/mod_avmd/mod_avmd.c
+++ b/src/mod/applications/mod_avmd/mod_avmd.c
@@ -42,6 +42,7 @@
     #define ISINF(x) (isinf(x))
 #else
     int __isnan(double);
+	int __isinf(double);
     #define ISNAN(x) (__isnan(x))
     #define ISINF(x) (__isinf(x))
 #endif