diff --git a/Utilities/JIT.cpp b/Utilities/JIT.cpp
index ba008ee4d6..8d81d69ceb 100644
--- a/Utilities/JIT.cpp
+++ b/Utilities/JIT.cpp
@@ -925,10 +925,14 @@ public:
 		z_stream zs{};
 		uLong zsz = compressBound(obj.getBufferSize()) + 256;
 		auto zbuf = std::make_unique<uchar[]>(zsz);
+#ifndef _MSC_VER
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wold-style-cast"
+#endif
 		deflateInit2(&zs, 9, Z_DEFLATED, 16 + 15, 9, Z_DEFAULT_STRATEGY);
+#ifndef _MSC_VER
 #pragma GCC diagnostic pop
+#endif
 		zs.avail_in  = static_cast<uInt>(obj.getBufferSize());
 		zs.next_in   = reinterpret_cast<uchar*>(const_cast<char*>(obj.getBufferStart()));
 		zs.avail_out = static_cast<uInt>(zsz);
@@ -961,10 +965,14 @@ public:
 			std::vector<uchar> gz = cached.to_vector<uchar>();
 			std::vector<uchar> out;
 			z_stream zs{};
+#ifndef _MSC_VER
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wold-style-cast"
+#endif
 			inflateInit2(&zs, 16 + 15);
+#ifndef _MSC_VER
 #pragma GCC diagnostic pop
+#endif
 			zs.avail_in = static_cast<uInt>(gz.size());
 			zs.next_in  = gz.data();
 			out.resize(gz.size() * 6);
diff --git a/Utilities/Log.cpp b/Utilities/Log.cpp
index ccc5721969..6a4092334c 100644
--- a/Utilities/Log.cpp
+++ b/Utilities/Log.cpp
@@ -422,10 +422,14 @@ logs::file_writer::file_writer(const std::string& name)
 		// Compressed log, make it inaccessible (foolproof)
 		if (m_fout2.open(log_name + ".gz", fs::rewrite + fs::unread))
 		{
+#ifndef _MSC_VER
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wold-style-cast"
+#endif
 			if (deflateInit2(&m_zs, 9, Z_DEFLATED, 16 + 15, 9, Z_DEFAULT_STRATEGY) != Z_OK)
+#ifndef _MSC_VER
 #pragma GCC diagnostic pop
+#endif
 				m_fout2.close();
 		}
 
diff --git a/rpcs3/Crypto/unself.cpp b/rpcs3/Crypto/unself.cpp
index 0c89695a0b..f7e39a559f 100644
--- a/rpcs3/Crypto/unself.cpp
+++ b/rpcs3/Crypto/unself.cpp
@@ -832,11 +832,14 @@ std::vector<fs::file> SCEDecrypter::MakeFile()
 			strm.avail_out = BUFSIZE;
 			strm.next_in = data_buf.get()+data_buf_offset;
 			strm.next_out = tempbuf;
+#ifndef _MSC_VER
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wold-style-cast"
+#endif
 			int ret = inflateInit(&strm);
+#ifndef _MSC_VER
 #pragma GCC diagnostic pop
-
+#endif
 			while (strm.avail_in)
 			{
 				ret = inflate(&strm, Z_NO_FLUSH);