@@ -502,11 +502,11 @@
 AC_MSG_RESULT($objc_runtime)
 
 case "$objc_runtime" in
 "ObjFW runtime")
 	AC_DEFINE(OF_OBJFW_RUNTIME, 1, [Whether we use the ObjFW runtime])
-	AC_SUBST(USE_SRCS_TAGGED_POINTER, '${SRCS_TAGGED_POINTER}')
+	AC_SUBST(USE_SRCS_TAGGED_POINTERS, '${SRCS_TAGGED_POINTERS}')
 
 	AC_MSG_CHECKING([whether -fobjc-runtime=objfw is supported])
 
 	old_OBJCFLAGS="$OBJCFLAGS"
 	OBJCFLAGS="$OBJCFLAGS -Xclang -fobjc-runtime=objfw"