diff --git a/backends/libyahoo2/yahoo/yahoo_util.h b/backends/libyahoo2/yahoo/yahoo_util.h
index cc92486740b1613be47ffe566d7a6bdb802c4a6a..03efd716e4a54a57214bbd2325fa1aee92aca908 100644
--- a/backends/libyahoo2/yahoo/yahoo_util.h
+++ b/backends/libyahoo2/yahoo/yahoo_util.h
@@ -64,7 +64,7 @@ void *y_memdup(const void *addr, int n);
 char **y_strsplit(char *str, char *sep, int nelem);
 void y_strfreev(char **vector);
 
-#ifndef _WIN32
+#if !defined(_WIN32) && !defined(__APPLE__)
 int strncasecmp(const char *s1, const char *s2, size_t n);
 int strcasecmp(const char *s1, const char *s2);