diff --git a/.travis.yml b/.travis.yml
index 8f988223c0f..20d952b9e42 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -31,7 +31,8 @@ matrix:
 #           - libreadline-dev:i386
 
     # compiler packages and run package tests
-    - env: TEST_SUITES=testpackages
+    # we don't use --enable-debug to prevent the tests from taking too long
+    - env: TEST_SUITES="testpackages testinstall-loadall" ABI=64 CONFIGFLAGS="--enable-Werror"
       addons:
         apt_packages:
           - gcc-multilib
@@ -47,7 +48,7 @@ matrix:
           - pari-gp                 # for alnuth
           - libzmq3-dev             # for ZeroMQInterface
 
-    - env: TEST_SUITES=testpackages ABI=32
+    - env: TEST_SUITES="testpackages testinstall-loadall" ABI=32 CONFIGFLAGS="--enable-Werror"
       addons:
         apt_packages:
           - gcc-multilib
diff --git a/tst/testinstall-loadall.g b/tst/testinstall-loadall.g
new file mode 100644
index 00000000000..dadcce34092
--- /dev/null
+++ b/tst/testinstall-loadall.g
@@ -0,0 +1,2 @@
+LoadAllPackages();
+ReadGapRoot("tst/testinstall.g");