diff --git a/heaptrack.spec b/heaptrack.spec
index e99db62..071ae96 100644
--- a/heaptrack.spec
+++ b/heaptrack.spec
@@ -85,8 +85,8 @@ A Qt5/KF5 based GUI for Heaptrack.
 # Disable building tests, they're not used and post-build-checks trips over it
 sed -i"" '/add_subdirectory(tests)/d' CMakeLists.txt
 
-%if "%{?_lib}" == "lib64"
-_lib_suffix="64"
+%if "%{_lib}" == "lib64"
+_lib_suffix=64
 %endif
 
 %build