diff --git a/include/mbedtls/gcm.h b/include/mbedtls/gcm.h
index 745cd28..98faa43 100644
--- a/include/mbedtls/gcm.h
+++ b/include/mbedtls/gcm.h
@@ -46,7 +46,7 @@
 
 #if !defined(MBEDTLS_GCM_ALT)
 
-#if defined(MBEDTLS_GCM_LARGETABLE)
+#if defined(MBEDTLS_GCM_LARGE_TABLE)
 #define MBEDTLS_GCM_HTABLE_SIZE 256
 #else
 #define MBEDTLS_GCM_HTABLE_SIZE 16
diff --git a/include/mbedtls/mbedtls_config.h b/include/mbedtls/mbedtls_config.h
index bf11377..ada6204 100644
--- a/include/mbedtls/mbedtls_config.h
+++ b/include/mbedtls/mbedtls_config.h
@@ -2801,7 +2801,7 @@
 #define MBEDTLS_GCM_C
 
 /**
- * \def MBEDTLS_GCM_LARGETABLE
+ * \def MBEDTLS_GCM_LARGE_TABLE
  *
  * Enable large pre-computed tables for  Galois/Counter Mode (GCM).
  * Can significantly increase throughput on systems without GCM hardware
@@ -2813,9 +2813,8 @@
  * Module:  library/gcm.c
  *
  * Requires: MBEDTLS_GCM_C
- *
  */
-//#define MBEDTLS_GCM_LARGETABLE
+//#define MBEDTLS_GCM_LARGE_TABLE
 
 /**
  * \def MBEDTLS_HKDF_C