1 files changed, 1 insertions, 1 deletions
diff --git a/doio.c b/doio.c
index 7456cefa48..e9f2a71397 100644
--- a/doio.c
+++ b/doio.c
@@ -27,7 +27,7 @@
 #ifdef HAS_SHM
 #include <sys/shm.h>
 # ifndef HAS_SHMAT_PROTOTYPE
-    extern Shmat_t shmat _((int, char *, int));
+    extern Shmat_t shmat (int, char *, int);
 # endif
 #endif
 #endif