diff --git a/spirv-tools.spec b/spirv-tools.spec
index cdbf8b7..fcfda27 100644
--- a/spirv-tools.spec
+++ b/spirv-tools.spec
@@ -32,7 +32,11 @@ Source9:        baselibs.conf
 Patch1:         ver.diff
 BuildRequires:  bison
 BuildRequires:  cmake >= 3.17.2
+%if 0%{?suse_version} >= 1599
 BuildRequires:  gcc-c++
+%else
+BuildRequires:  gcc11-c++
+%endif
 BuildRequires:  pkg-config
 BuildRequires:  python3-base
 BuildRequires:  python3-xml
@@ -69,6 +73,9 @@ find . -type f -name CMakeLists.txt -exec \
 	perl -i -pe 's{\@PACKAGE_VERSION\@}{%version}' CMakeLists.txt {} +
 
 %build
+%if 0%{?suse_version} && 0%{?suse_version} < 1599
+export CXX=g++-11
+%endif
 %cmake -DSPIRV-Headers_SOURCE_DIR="%_prefix" \
 	-DSPIRV_TOOLS_BUILD_STATIC:BOOL=OFF -DBUILD_SHARED_LIBS:BOOL=ON
 %cmake_build