diff --git a/rpcs3/Emu/Cell/Modules/cellGame.cpp b/rpcs3/Emu/Cell/Modules/cellGame.cpp
index 061c7d96af..269bdab415 100644
--- a/rpcs3/Emu/Cell/Modules/cellGame.cpp
+++ b/rpcs3/Emu/Cell/Modules/cellGame.cpp
@@ -837,10 +837,17 @@ error_code cellGameGetParamString(s32 id, vm::ptr<char> buf, u32 bufsize)
 		return CELL_GAME_ERROR_NOTSUPPORTED;
 	}
 
-	std::string value = psf::get_string(prm->sfo, std::string(key.name));
-	value.resize(bufsize - 1);
+	const std::string value = psf::get_string(prm->sfo, std::string(key.name));
+	const auto value_size = value.size() + 1;
 
-	std::memcpy(buf.get_ptr(), value.c_str(), bufsize);
+	const auto pbuf = buf.get_ptr();
+	const bool to_pad = bufsize > value_size;
+	std::memcpy(pbuf, value.c_str(), to_pad ? value_size : bufsize);
+
+	if (to_pad)
+	{
+		std::memset(pbuf + value_size, 0, bufsize - value_size);
+	}
 
 	return CELL_OK;
 }