diff --git a/rust.spec b/rust.spec
index e4aa812..435bac9 100644
--- a/rust.spec
+++ b/rust.spec
@@ -54,13 +54,21 @@
 
 # Will build with distro LLVM by default, but the following
 # versions do not have a version new enough, >= 6.0
-%if 0%{?suse_version} <= 1315 && 0%{?is_opensuse}
+# add --without bundled_llvm option, i.e. enable bundled_llvm by default
+# Leap 15.0
+%if 0%{?sle_version} == 150000 && 0%{?is_opensuse}
 %bcond_without bundled_llvm
 %endif
-%if 0%{?sle_version} < 120400 && 0%{?is_backports} 
+# Leap 42.3
+%if 0%{?sle_version} == 120300 && 0%{?is_opensuse}
 %bcond_without bundled_llvm
 %endif
-%if 0%{?sle_version} <= 150000 && 0%{?is_opensuse}
+# Leap 42.2
+%if 0%{?sle_version} == 120200 && 0%{?is_opensuse}
+%bcond_without bundled_llvm
+%endif
+# SLE Backports SP3 or less
+%if 0%{?sle_version} <= 120300 && 0%{?is_backports}
 %bcond_without bundled_llvm
 %endif