diff --git a/src/nano.h b/src/nano.h
index ab6426bb..68f32550 100644
--- a/src/nano.h
+++ b/src/nano.h
@@ -413,8 +413,8 @@ typedef struct rcoption {
 #define NANO_CONTROL_8 127
 
 #define NANO_ALT_SPACE ' '
-#define NANO_ALT_LPAREN '('
-#define NANO_ALT_RPAREN ')'
+#define NANO_ALT_LPARENTHESIS '('
+#define NANO_ALT_RPARENTHESIS ')'
 #define NANO_ALT_PLUS '+'
 #define NANO_ALT_COMMA ','
 #define NANO_ALT_MINUS '-'
@@ -561,10 +561,10 @@ typedef struct rcoption {
 #define NANO_CUTTILLEND_KEY		NANO_CONTROL_X
 #define NANO_CUTTILLEND_ALTKEY		NANO_ALT_T
 #define NANO_PARABEGIN_KEY		NANO_CONTROL_W
-#define NANO_PARABEGIN_ALTKEY		NANO_ALT_LPAREN
+#define NANO_PARABEGIN_ALTKEY		NANO_ALT_LPARENTHESIS
 #define NANO_PARABEGIN_ALTKEY2		NANO_ALT_9
 #define NANO_PARAEND_KEY		NANO_CONTROL_O
-#define NANO_PARAEND_ALTKEY		NANO_ALT_RPAREN
+#define NANO_PARAEND_ALTKEY		NANO_ALT_RPARENTHESIS
 #define NANO_PARAEND_ALTKEY2		NANO_ALT_0
 #define NANO_FULLJUSTIFY_KEY		NANO_CONTROL_U
 #define NANO_FULLJUSTIFY_ALTKEY		NANO_ALT_J