diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -17,6 +17,9 @@
 if(POLICY CMP0042)
   cmake_policy(SET CMP0042 OLD)
 endif()
+if(POLICY CMP0026)
+  cmake_policy(SET CMP0026 OLD)
+endif()
 
 option(BUILD_TESTS "Create test" ON)
 option(BUILD_TOOLS "Compile mozcerts and qcatool" ON)