diff --git a/headers/os/drivers/KernelExport.h b/headers/os/drivers/KernelExport.h
index 076821ff7f..f53aec7509 100644
--- a/headers/os/drivers/KernelExport.h
+++ b/headers/os/drivers/KernelExport.h
@@ -190,7 +190,7 @@ extern void			panic(const char *format, ...);
 #endif
 
 extern void			kernel_debugger(const char *message);	/* enter kernel debugger */
-extern uint32		parse_expression(const char *string);	/* utility for debugger cmds */
+extern uint64		parse_expression(const char *string);	/* utility for debugger cmds */
 
 /* special return codes for kernel debugger */
 #define  B_KDEBUG_CONT   2
diff --git a/src/system/kernel/debug/debug.cpp b/src/system/kernel/debug/debug.cpp
index 37c1744c3b..e99f019dbd 100644
--- a/src/system/kernel/debug/debug.cpp
+++ b/src/system/kernel/debug/debug.cpp
@@ -1003,7 +1003,7 @@ debug_init_post_modules(struct kernel_args *args)
 //	#pragma mark - public API
 
 
-uint32
+uint64
 parse_expression(const char *expression)
 {
 	uint64 result;