diff --git a/subsurface-core/worldmap-save.c b/subsurface-core/worldmap-save.c
index f79978495..e7e8bcc30 100644
--- a/subsurface-core/worldmap-save.c
+++ b/subsurface-core/worldmap-save.c
@@ -1,3 +1,6 @@
+// Clang has a bug on zero-initialization of C structs.
+#pragma clang diagnostic ignored "-Wmissing-field-initializers"
+
 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>