diff --git a/src/Makefile.cfg b/src/Makefile.cfg
index 8402e349..ff4d2bac 100644
--- a/src/Makefile.cfg
+++ b/src/Makefile.cfg
@@ -222,7 +222,7 @@ endif
 ifdef GCC71
  WFLAGS+=-Wno-error=implicit-fallthrough
  WFLAGS+=-Wno-implicit-fallthrough
- WFLAGS+=-Wno-error=format-truncation
+ WFLAGS+=-Wno-format-truncation
 endif
 ifdef GCC80
  WFLAGS+=-Wno-error=format-overflow