diff --git a/extra/UTF-8codes.txt b/extra/UTF-8codes.txt
index a1e9f64..115c074 100644
--- a/extra/UTF-8codes.txt
+++ b/extra/UTF-8codes.txt
@@ -60,7 +60,7 @@ Constants to use in decoding keyboard values from PS2KeyMap
     PS2_FRACTION_ONE_QUARTER	    ¼
     PS2_FRACTION_ONE_HALF	        ½
     PS2_FRACTION_THREE_QUARTERS	    ¾
-    PS2_INVERTED_QUESTION MARK	    ¿
+    PS2_INVERTED_QUESTION_MARK	    ¿
     PS2_A_GRAVE			            À
     PS2_A_ACUTE			            Á
     PS2_A_CIRCUMFLEX		        Â
diff --git a/keywords.txt b/keywords.txt
index f66a6da..eee1ede 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -49,7 +49,7 @@ PS2_RIGHT_DOUBLE_ANGLE_QUOTE	LITERAL1
 PS2_FRACTION_ONE_QUARTER	LITERAL1
 PS2_FRACTION_ONE_HALF	LITERAL1
 PS2_FRACTION_THREE_QUARTERS	LITERAL1
-PS2_INVERTED_QUESTION MARK	LITERAL1
+PS2_INVERTED_QUESTION_MARK	LITERAL1
 PS2_A_GRAVE	LITERAL1
 PS2_A_ACUTE	LITERAL1
 PS2_A_CIRCUMFLEX	LITERAL1
diff --git a/src/PS2KeyMap.h b/src/PS2KeyMap.h
index 0f8527c..cbd92e8 100644
--- a/src/PS2KeyMap.h
+++ b/src/PS2KeyMap.h
@@ -171,7 +171,7 @@
 #define PS2_FRACTION_ONE_QUARTER	    188 // ¼
 #define PS2_FRACTION_ONE_HALF	        189 // ½
 #define PS2_FRACTION_THREE_QUARTERS	    190 // ¾
-#define PS2_INVERTED_QUESTION MARK	    191 // ¿
+#define PS2_INVERTED_QUESTION_MARK	    191 // ¿
 #define PS2_A_GRAVE			            192 // À
 #define PS2_A_ACUTE			            193 // Á
 #define PS2_A_CIRCUMFLEX		        194 // Â