diff --git a/ndk/build/core/definitions.mk b/ndk/build/core/definitions.mk
index 4d978979b..4135faad3 100644
--- a/ndk/build/core/definitions.mk
+++ b/ndk/build/core/definitions.mk
@@ -264,7 +264,7 @@ NDK_APP_VARS_REQUIRED := APP_MODULES APP_PROJECT_PATH
 NDK_APP_VARS_OPTIONAL := APP_OPTIM APP_CPPFLAGS APP_CFLAGS APP_CXXFLAGS
 
 # the list of all variables that may appear in an Application.mk file
-NDK_APP_VARS := $(NDK_APP_VARS_REQUIRED) $(NDK_APPS_VARS_OPTIONAL)
+NDK_APP_VARS := $(NDK_APP_VARS_REQUIRED) $(NDK_APP_VARS_OPTIONAL)
 
 # =============================================================================
 #