--- a/mozglue/tests/gtest/Injector/moz.build
+++ b/mozglue/tests/gtest/Injector/moz.build
@@ -1,9 +1,10 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DIST_INSTALL = False
 
 SimplePrograms(['Injector'])
 
-TEST_HARNESS_FILES.gtest += ['!Injector.exe']
+if CONFIG['COMPILE_ENVIRONMENT']:
+   TEST_HARNESS_FILES.gtest += ['!Injector.exe']

--- a/mozglue/tests/gtest/InjectorDLL/moz.build
+++ b/mozglue/tests/gtest/InjectorDLL/moz.build
@@ -6,9 +6,10 @@
 DIST_INSTALL = False
 
 SharedLibrary('InjectorDLL')
 
 UNIFIED_SOURCES = [
     'InjectorDLL.cpp',
 ]
 
-TEST_HARNESS_FILES.gtest += ['!InjectorDLL.dll']
+if CONFIG['COMPILE_ENVIRONMENT']:
+    TEST_HARNESS_FILES.gtest += ['!InjectorDLL.dll']