diff --git a/mono-core.spec b/mono-core.spec
index 42059c7873..e3ac0290ee 100644
--- a/mono-core.spec
+++ b/mono-core.spec
@@ -47,6 +47,7 @@ BuildRequires:  fdupes
 BuildRequires:  gcc-c++
 %if 0%{?rhel} >= 8
 BuildRequires:	python36
+%define __python3 /usr/bin/python3
 %endif
 %if 0%{?rhel} < 7
 BuildRequires:  devtoolset-2-toolchain