diff --git a/src/system/kernel/arch/x86/arch_debug.cpp b/src/system/kernel/arch/x86/arch_debug.cpp
index d799e2ec15..39447c2ffc 100644
--- a/src/system/kernel/arch/x86/arch_debug.cpp
+++ b/src/system/kernel/arch/x86/arch_debug.cpp
@@ -218,8 +218,12 @@ print_demangled_call(const char* image, const char* symbol, addr_t args,
 				break;
 		}
 
-		if (type == B_STRING_TYPE)
-			kprintf(" \"%s\"", (char*)value);
+		if (type == B_STRING_TYPE) {
+			if (user_strlcpy(buffer, (char*)value, sizeof(buffer)) < B_OK)
+				kprintf(" '???'");
+			else
+				kprintf(" \"%s\"", buffer);
+		}
 
 		if (addDebugVariables)
 			set_debug_argument_variable(i, value);