diff --git a/_constraints b/_constraints
new file mode 100644
index 0000000..cf31661
--- /dev/null
+++ b/_constraints
@@ -0,0 +1,7 @@
+<constraints>
+  <hardware>
+    <memoryperjob>
+      <size unit="M">1800</size>
+    </memoryperjob>
+  </hardware>
+</constraints>
diff --git a/mold.changes b/mold.changes
index 16737f1..fd85105 100644
--- a/mold.changes
+++ b/mold.changes
@@ -1,3 +1,13 @@
+-------------------------------------------------------------------
+Fri May 13 09:31:25 UTC 2022 - Martin Liška <mliska@suse.cz>
+
+- Use better CC and TEST_CC variables.
+
+-------------------------------------------------------------------
+Fri May 13 09:21:22 UTC 2022 - Martin Liška <mliska@suse.cz>
+
+- Add memory per job constraint.
+
 -------------------------------------------------------------------
 Tue May 10 12:30:07 UTC 2022 - Martin Liška <mliska@suse.cz>
 
diff --git a/mold.spec b/mold.spec
index d9cd8cf..8599d1d 100644
--- a/mold.spec
+++ b/mold.spec
@@ -67,9 +67,6 @@ build time especially in rapid debug-edit-rebuild cycles.
 %if %{suse_version} < 1550
 export CC=gcc-10
 export CXX=g++-10
-%else
-export CC=gcc
-export CXX=g++
 %endif
 export CXXFLAGS="%{optflags} -Wno-sign-compare"
 
@@ -93,6 +90,10 @@ LIBEXECDIR=%{_libexecdir} \
 %{build_args}
 
 %check
+%if %{suse_version} < 1550
+export TEST_CC=gcc-10
+export TEST_CXX=g++-10
+%endif
 make test -k -e \
 PREFIX=%{_prefix} \
 BINDIR=%{_bindir} \