diff --git a/libyui-qt-graph.spec b/libyui-qt-graph.spec
index 5240292..6b91f91 100644
--- a/libyui-qt-graph.spec
+++ b/libyui-qt-graph.spec
@@ -96,8 +96,8 @@ CMAKE_OPTS="-DCMAKE_BUILD_TYPE=RELEASE"
 
 cmake .. \
  -DBUILD_EXAMPLES=on \
- -DCMAKE_CXX_FLAGS="-Wno-error"\
- -DCMAKE_C_FLAGS="-Wno-error"\
+ -DCMAKE_CXX_FLAGS="-Wno-error=sign-compare"\
+ -DCMAKE_C_FLAGS="-Wno-error=sign-compare"\
  $CMAKE_OPTS
 
 make %{?jobs:-j%jobs}