diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5b6b7c48d2..3ad742534e 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -343,6 +343,9 @@ if(CPACK_RPM_PACKAGE_RELEASE)
   set(CPACK_RPM_PACKAGE_RELEASE_DIST ON)
 endif()
 
+# Cpack converts !/usr/bin/env python3 to /usr/libexec/platform-python in RHEL8.
+# prevent the BRP(buildroot policy) script from checking and modifying interpreter directives
+set(CPACK_RPM_SPEC_MORE_DEFINE "%undefine __brp_mangle_shebangs")
 
 # The line below doesn't currently work; it may be this issue:
 # https://bugzilla.redhat.com/show_bug.cgi?id=1811358