1 files changed, 1 insertions, 1 deletions
diff --git a/src/os.h b/src/os.h
index ba00c44ed..670ee43d3 100644
--- a/src/os.h
+++ b/src/os.h
@@ -247,7 +247,7 @@ int sqlite3OsShmOpen(sqlite3_file *id);
 int sqlite3OsShmSize(sqlite3_file *id, int, int*);
 int sqlite3OsShmGet(sqlite3_file *id, int, int*, void volatile**);
 int sqlite3OsShmRelease(sqlite3_file *id);
-int sqlite3OsShmLock(sqlite3_file *id, int, int*);
+int sqlite3OsShmLock(sqlite3_file *id, int, int, int);
 void sqlite3OsShmBarrier(sqlite3_file *id);
 int sqlite3OsShmClose(sqlite3_file *id, int);