diff --git a/ntoskrnl/include/internal/kd64.h b/ntoskrnl/include/internal/kd64.h
index 9c8670ab557..cf46bc2a3b6 100644
--- a/ntoskrnl/include/internal/kd64.h
+++ b/ntoskrnl/include/internal/kd64.h
@@ -515,7 +515,7 @@ KdpSysCheckLowMemory(
 VOID
 __cdecl
 KdpDprintf(
-    _In_ PCHAR Format,
+    _In_ PCSTR Format,
     ...);
 
 BOOLEAN
diff --git a/ntoskrnl/kd64/kdprint.c b/ntoskrnl/kd64/kdprint.c
index c6089b534b4..0063e550458 100644
--- a/ntoskrnl/kd64/kdprint.c
+++ b/ntoskrnl/kd64/kdprint.c
@@ -526,7 +526,7 @@ KdpPrint(
 VOID
 __cdecl
 KdpDprintf(
-    _In_ PCHAR Format,
+    _In_ PCSTR Format,
     ...)
 {
     STRING String;