diff --git a/hw/kdrive/src/kdrive.h b/hw/kdrive/src/kdrive.h
index a4b7576d00..c19de7055c 100644
--- a/hw/kdrive/src/kdrive.h
+++ b/hw/kdrive/src/kdrive.h
@@ -217,7 +217,7 @@ void KdRemovePointerDriver(KdPointerDriver * driver);
 KdPointerInfo *KdNewPointer(void);
 void KdFreePointer(KdPointerInfo *);
 int KdAddPointer(KdPointerInfo * ki);
-int KdAddConfigPointer(char *pointer);
+int KdAddConfigPointer(const char *pointer);
 void KdRemovePointer(KdPointerInfo * ki);
 
 #define KD_KEY_COUNT 248
@@ -274,7 +274,7 @@ void KdAddKeyboardDriver(KdKeyboardDriver * driver);
 void KdRemoveKeyboardDriver(KdKeyboardDriver * driver);
 KdKeyboardInfo *KdNewKeyboard(void);
 void KdFreeKeyboard(KdKeyboardInfo * ki);
-int KdAddConfigKeyboard(char *pointer);
+int KdAddConfigKeyboard(const char *pointer);
 int KdAddKeyboard(KdKeyboardInfo * ki);
 void KdRemoveKeyboard(KdKeyboardInfo * ki);
 
diff --git a/hw/kdrive/src/kinput.c b/hw/kdrive/src/kinput.c
index 692c294e3d..29a5054e55 100644
--- a/hw/kdrive/src/kinput.c
+++ b/hw/kdrive/src/kinput.c
@@ -698,7 +698,7 @@ KdNewKeyboard(void)
 }
 
 int
-KdAddConfigKeyboard(char *keyboard)
+KdAddConfigKeyboard(const char *keyboard)
 {
     struct KdConfigDevice **prev, *new;
 
@@ -762,7 +762,7 @@ KdRemoveKeyboard(KdKeyboardInfo * ki)
 }
 
 int
-KdAddConfigPointer(char *pointer)
+KdAddConfigPointer(const char *pointer)
 {
     struct KdConfigDevice **prev, *new;