diff --git a/cmake/Toolchains/ios.cmake b/cmake/Toolchains/ios.cmake
index 81f09fa886..daf87716d8 100644
--- a/cmake/Toolchains/ios.cmake
+++ b/cmake/Toolchains/ios.cmake
@@ -12,6 +12,8 @@
 # PPSSPP platform flags
 set(MOBILE_DEVICE ON)
 set(USING_GLES2 ON)
+# The compiler checks re-read this file without the cache, so pass IOS_APP_STORE on.
+list(APPEND CMAKE_TRY_COMPILE_PLATFORM_VARIABLES IOS_APP_STORE)
 if(IOS_APP_STORE)
   # The static MoltenVK in ios/MoltenVK needs 15.0.
   set(IPHONEOS_DEPLOYMENT_TARGET 15.0)