diff --git a/installation-images-SLES.spec b/installation-images-SLES.spec
index 15a5835..124840e 100644
--- a/installation-images-SLES.spec
+++ b/installation-images-SLES.spec
@@ -20,7 +20,7 @@
 
 %define theme SLES
 
-%if theme = SLES
+%if %theme = SLES
 %define base_theme SLE
 %else
 %define base_theme %theme
diff --git a/installation-images-openSUSE.spec b/installation-images-openSUSE.spec
index 557dbbf..826ba78 100644
--- a/installation-images-openSUSE.spec
+++ b/installation-images-openSUSE.spec
@@ -20,7 +20,7 @@
 
 %define theme openSUSE
 
-%if theme = SLES
+%if %theme = SLES
 %define base_theme SLE
 %else
 %define base_theme %theme