1 files changed, 3 insertions, 0 deletions
diff --git a/src/resources/mapreader.cpp b/src/resources/mapreader.cpp
index 497817a7d..d60f18d03 100644
--- a/src/resources/mapreader.cpp
+++ b/src/resources/mapreader.cpp
@@ -141,6 +141,9 @@ int inflateMemory(unsigned char *restrict const in,
         {
             case Z_NEED_DICT:
                 ret = Z_DATA_ERROR;
+#ifdef __clang__
+            [[clang::fallthrough]];
+#endif
             case Z_DATA_ERROR:
             case Z_MEM_ERROR:
                 (void) inflateEnd(&strm);