diff --git a/build-appveyor.ps1 b/build-appveyor.ps1
index ca8f2446..47a5554d 100644
--- a/build-appveyor.ps1
+++ b/build-appveyor.ps1
@@ -40,6 +40,12 @@ if ( $? -eq $false ) {
   throw "package failed"
 }
 
+.\common\Release\testcommon.exe
+
+if ( $? -eq $false ) {
+  throw "testcommon failed"
+}
+
 .\light\Release\testlight.exe
 
 if ( $? -eq $false ) {
diff --git a/build-linux-64.sh b/build-linux-64.sh
index 061627f9..48f864a6 100755
--- a/build-linux-64.sh
+++ b/build-linux-64.sh
@@ -39,6 +39,7 @@ make -j8 VERBOSE=1 testqbsp || exit 1
 cpack || exit 1
 
 # run tests
+./common/testcommon || exit 1
 ./light/testlight || exit 1
 ./qbsp/testqbsp || exit 1
 
diff --git a/build-osx.sh b/build-osx.sh
index 8a2e225b..c0ce4b7d 100755
--- a/build-osx.sh
+++ b/build-osx.sh
@@ -53,5 +53,6 @@ otool -L ./bspinfo/bspinfo
 otool -L ./bsputil/bsputil
 
 # run tests
+./common/testcommon || exit 1
 ./light/testlight || exit 1
 ./qbsp/testqbsp || exit 1