diff --git a/easybuild/easyconfigs/f/freeglut/freeglut-3.6.0-GCCcore-13.3.0.eb b/easybuild/easyconfigs/f/freeglut/freeglut-3.6.0-GCCcore-13.3.0.eb
index dc2e127e693..fd7092a2e2e 100644
--- a/easybuild/easyconfigs/f/freeglut/freeglut-3.6.0-GCCcore-13.3.0.eb
+++ b/easybuild/easyconfigs/f/freeglut/freeglut-3.6.0-GCCcore-13.3.0.eb
@@ -22,7 +22,15 @@ dependencies = [
     ('libGLU', '9.0.3'),
 ]
 
-configopts = ' -DX11_X11_LIB="$EBROOTX11/lib/libX11.so"  -DX11_X11_INCLUDE_PATH="$EBROOTX11/include/X11"  -DX11_Xext_LIB="$EBROOTX11/lib/libXext.so"  -DX11_Xrandr_LIB="$EBROOTX11/lib/libXrandr.so"  -DX11_Xrandr_INCLUDE_PATH="$EBROOTX11/include/X11/extensions/"  -DX11_Xi_LIB="$EBROOTX11/lib/libXrandr.so"  -DX11_Xi_INCLUDE_PATH="$EBROOTX11/include/X11/extensions/" '
+configopts = ' '.join([
+    '-DX11_X11_LIB="$EBROOTX11/lib/libX11.so"',
+    '-DX11_X11_INCLUDE_PATH="$EBROOTX11/include/X11"',
+    '-DX11_Xext_LIB="$EBROOTX11/lib/libXext.so"',
+    '-DX11_Xrandr_LIB="$EBROOTX11/lib/libXrandr.so"',
+    '-DX11_Xrandr_INCLUDE_PATH="$EBROOTX11/include/X11/extensions/"',
+    '-DX11_Xi_LIB="$EBROOTX11/lib/libXrandr.so"',
+    '-DX11_Xi_INCLUDE_PATH="$EBROOTX11/include/X11/extensions/"',
+])
 
 
 sanity_check_paths = {