diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1e723d7..aed22b6 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -5,9 +5,10 @@ include:
 
 smolensk15-nightly:
   variables:
+    CMAKE_GENERATOR: Unix Makefiles
     UPDATE_CMD: apt-get update
     INSTALL_CMD: apt-get -y install cmake
-    CONFIGURE_CMD: cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=_output -DCPACK_PACKAGING_INSTALL_PREFIX=/opt/rtis ..
+    CONFIGURE_CMD: cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=_output -DCPACK_PACKAGING_INSTALL_PREFIX=/opt/rtis ..
     BUILD_CMD: make -j$(nproc)
     PACKAGE_CMD: tar zcf test.tar.gz
   extends: .scheduled-smolensk15