diff --git a/mingw-w64-openimageio/0012-maybe-uninitialized-errors.patch b/mingw-w64-openimageio/0012-maybe-uninitialized-errors.patch
new file mode 100644
index 0000000000..58063ceb57
--- /dev/null
+++ b/mingw-w64-openimageio/0012-maybe-uninitialized-errors.patch
@@ -0,0 +1,12 @@
+--- oiio-Release-1.8.16/src/pnm.imageio/pnminput.cpp.orig	2018-11-30 21:59:59.037519700 +0300
++++ oiio-Release-1.8.16/src/pnm.imageio/pnminput.cpp	2018-11-30 22:00:26.981118000 +0300
+@@ -331,7 +331,8 @@
+ {
+     try {
+ 
+-    unsigned int width, height;
++    unsigned int width = 0;
++    unsigned int height = 0;
+     char c;
+     if (!m_file)
+         return false;