diff --git a/installation-images-SLES.spec b/installation-images-SLES.spec
index 124840e..d03f871 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 826ba78..2bc6734 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