diff --git a/examples/chip-tool/commands/clusters/ComplexArgument.h b/examples/chip-tool/commands/clusters/ComplexArgument.h
index c3937581d76653..8684116893cd12 100644
--- a/examples/chip-tool/commands/clusters/ComplexArgument.h
+++ b/examples/chip-tool/commands/clusters/ComplexArgument.h
@@ -196,7 +196,7 @@ class ComplexArgumentParser
 
         size_t size = strlen(value.asCString());
         auto buffer = static_cast<char *>(chip::Platform::MemoryCalloc(size, sizeof(char)));
-        chip::Platform::CopyString(buffer, size, value.asCString());
+        memcpy(buffer, value.asCString(), size);
 
         request = chip::CharSpan(buffer, size);
         return CHIP_NO_ERROR;