diff --git a/libraries/libqinfinity/libqinfinity.SlackBuild b/libraries/libqinfinity/libqinfinity.SlackBuild
index 4820de7ca0..751f619b74 100644
--- a/libraries/libqinfinity/libqinfinity.SlackBuild
+++ b/libraries/libqinfinity/libqinfinity.SlackBuild
@@ -58,7 +58,7 @@ mkdir -p build
 cd build
   cmake \
     -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
-    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
+    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS -Wno-error=narrowing" \
     -DCMAKE_INSTALL_PREFIX=/usr \
     -DLIB_SUFFIX=${LIBDIRSUFFIX} \
     -DCMAKE_BUILD_TYPE=Release ..