diff --git a/os/rt/include/chmempools.h b/os/rt/include/chmempools.h
index 67cefa7df..da7006eda 100644
--- a/os/rt/include/chmempools.h
+++ b/os/rt/include/chmempools.h
@@ -39,14 +39,14 @@
 /* Module pre-compile time settings.                                         */
 /*===========================================================================*/
 
-#if !CH_CFG_USE_MEMCORE
-#error "CH_CFG_USE_MEMPOOLS requires CH_CFG_USE_MEMCORE"
-#endif
-
 /*===========================================================================*/
 /* Derived constants and error checks.                                       */
 /*===========================================================================*/
 
+#if !CH_CFG_USE_MEMCORE
+#error "CH_CFG_USE_MEMPOOLS requires CH_CFG_USE_MEMCORE"
+#endif
+
 /*===========================================================================*/
 /* Module data structures and types.                                         */
 /*===========================================================================*/