diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6d48d98b8e..994b00fbf2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -336,7 +336,7 @@ endif()
 ## Specify a RPM SPEC template
 # This template was generated by using "CPACK_RPM_GENERATE_USER_BINARY_SPECFILE_TEMPLATE"
 # but I've modified it to support CPACK_RPM_PACKAGE_RECOMMENDS for EL8+ and SLE
-set ( CPACK_RPM_USER_BINARY_SPECFILE "${CMAKE_CURRENT_BINARY_DIR}/RPM/${CPACK_RPM_PACKAGE_NAME}.spec.in" )
+set ( CPACK_RPM_USER_BINARY_SPECFILE "${CMAKE_CURRENT_SOURCE_DIR}/RPM/${CPACK_RPM_PACKAGE_NAME}.spec.in" )
 
 # 'dist' breaks manual builds on debian systems due to empty Provides
 execute_process( COMMAND rpm --eval %{?dist}