1 files changed, 1 insertions, 1 deletions
diff --git a/pop3.c b/pop3.c
index ec8cbdf5..80e0903f 100644
--- a/pop3.c
+++ b/pop3.c
@@ -26,7 +26,7 @@
 #endif /* OPIE_ENABLE */
 
 #ifndef strstr		/* glibc-2.1 declares this as a macro */
-extern char *strstr();	/* needed on sysV68 R3V7.1. */
+extern char *strstr(const char *, const char *);	/* needed on sysV68 R3V7.1. */
 #endif /* strstr */
 
 static int last;