diff --git a/src/system/kernel/arch/x86/arch_debug.cpp b/src/system/kernel/arch/x86/arch_debug.cpp
index 5b479c2a56..b7bb283f28 100644
--- a/src/system/kernel/arch/x86/arch_debug.cpp
+++ b/src/system/kernel/arch/x86/arch_debug.cpp
@@ -239,7 +239,7 @@ print_demangled_call(const char* image, const char* symbol, addr_t args,
 		if (type == B_STRING_TYPE) {
 			if (value == 0)
 				kprintf(" \33[31m\"<NULL>\"\33[0m");
-			else if (user_strlcpy(buffer, (char*)value, kBufferSize) < B_OK)
+			else if (debug_strlcpy(buffer, (char*)value, kBufferSize) < B_OK)
 				kprintf(" \33[31m\"<???>\"\33[0m");
 			else
 				kprintf(" \33[36m\"%s\"\33[0m", buffer);
diff --git a/src/system/kernel/elf.cpp b/src/system/kernel/elf.cpp
index 2b26cefeaf..4c4b0f9028 100644
--- a/src/system/kernel/elf.cpp
+++ b/src/system/kernel/elf.cpp
@@ -1465,6 +1465,8 @@ public:
 		if (!IS_USER_ADDRESS(address))
 			return false;
 
+		if (debug_debugger_running())
+			return debug_strlcpy(buffer, address, bufferSize) >= 0;
 		return user_strlcpy(buffer, address, bufferSize) >= 0;
 	}
 
@@ -1486,6 +1488,8 @@ UserSymbolLookup::_Read(const T* address, T& data)
 	if (!IS_USER_ADDRESS(address))
 		return false;
 
+	if (debug_debugger_running())
+		return debug_memcpy(&data, address, sizeof(T)) == B_OK;
 	return user_memcpy(&data, address, sizeof(T)) == B_OK;
 }