diff --git a/math/sprng/files/patch-SRC_pmlcg_pmlcg.cpp b/math/sprng/files/patch-SRC_pmlcg_pmlcg.cpp
new file mode 100644
index 000000000000..590e6ca0e26c
--- /dev/null
+++ b/math/sprng/files/patch-SRC_pmlcg_pmlcg.cpp
@@ -0,0 +1,23 @@
+--- SRC/pmlcg/pmlcg.cpp.orig	2018-10-22 19:39:18 UTC
++++ SRC/pmlcg/pmlcg.cpp
+@@ -853,14 +853,14 @@ int PMLCG::unpack_rng(char *packed)
+   p += load_long64(p,8,&mult);
+   p += load_long64(p,8,&x);
+ #else  /* No 64 bit type available */
+-  p += load_int(p,4,&a_size);
++  p += load_int(p,4,(unsigned int *)&a_size);
+ 
+-  p += load_intarray(p,2,4,&m);
+-  r[1] = m[1]&0xffffff; 
++  p += load_intarray(p,2,4,(unsigned int *)&m);
++  r[1] = m[1]&0xffffff;
+   r[0] = m[1]>>24 | m[0]<<8;
+-  
+-  p += load_intarray(p,2,4,&m);  
+-  a[1] = m[1]&0xffffff; 
++
++  p += load_intarray(p,2,4,(unsigned int *)&m);
++  a[1] = m[1]&0xffffff;
+   a[0] = m[1]>>24 | m[0]<<8;
+ #endif
+