diff --git a/cmds.txt b/cmds.txt
index 228f025..bd74c0c 100644
--- a/cmds.txt
+++ b/cmds.txt
@@ -1,2 +1,2 @@
-cmake -Bbuild -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_CXX_FLAGS=-Wall -Wextra -DUSE_SYSTEM_VTK=ON -DENABLE_VIEWER=OFF
+cmake -Bbuild -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_CXX_FLAGS="-Wall -Wextra" -DUSE_SYSTEM_VTK=ON -DENABLE_VIEWER=OFF
 cmake --build build