diff --git a/cloudcompare.spec b/cloudcompare.spec
index 106c3ad..b354418 100644
--- a/cloudcompare.spec
+++ b/cloudcompare.spec
@@ -106,6 +106,9 @@ Requires:       hicolor-icon-theme
 %global __provides_exclude_from ^%{_libdir}/%{name}/.*$
 %global __requires_exclude ^lib(Q)?CC_.*$
 
+# Get pre-Fedora 33 behavior of cmake
+%define __cmake_in_source_build 1
+
 %description
 CloudCompare is a 3D point cloud (and triangular mesh) processing software.
 It has been originally designed to perform comparison between two 3D points