diff --git a/emptyepsilon.spec b/emptyepsilon.spec
index f59a661..2f24fc2 100644
--- a/emptyepsilon.spec
+++ b/emptyepsilon.spec
@@ -34,6 +34,10 @@ BuildRequires:  gcc-c++
 BuildRequires:  sfml2-devel
 BuildRequires:  xorg-x11
 BuildRequires:  xorg-x11-devel
+%if 0%{?sle_version:1}
+# if sle_version is defined, this is not tumbleweed
+BuildRequires:  gcc10 gcc10-c++
+%endif
 
 %description
 EmptyEpsilon places you in the roles of a spaceship's bridge officers, like those seen in Star Trek. While you can play EmptyEpsilon alone or with friends, the best experience involves 6 players working together on each ship.
@@ -47,6 +51,11 @@ tar xf EmptyEpsilon-%{version}.tar.gz
 %build
 mkdir externals
 bsdtar xvf $RPM_SOURCE_DIR/glm.zip -C externals
+%if 0%{?sle_version:1}
+# if sle_version is defined, this is not tumbleweed
+export CC=gcc-10
+export CXX=g++-10
+%endif
 cmake -DSERIOUS_PROTON_DIR="$RPM_SOURCE_DIR/SeriousProton-EE-%{version}" \
  -DCMAKE_INSTALL_PREFIX=%{_prefix} \
  -DCMAKE_BUILD_TYPE=Release \