diff --git a/devel/opencl/Makefile b/devel/opencl/Makefile
index e190a99b87f4..d79453d45127 100644
--- a/devel/opencl/Makefile
+++ b/devel/opencl/Makefile
@@ -3,7 +3,7 @@
 
 PORTNAME=	opencl
 PORTVERSION=	2.2
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	devel
 
 MAINTAINER=	ohartman@zedat.fu-berlin.de
diff --git a/devel/opencl/files/patch-cl__platform.h b/devel/opencl/files/patch-cl__platform.h
new file mode 100644
index 000000000000..fbf617c34a5a
--- /dev/null
+++ b/devel/opencl/files/patch-cl__platform.h
@@ -0,0 +1,13 @@
+--- cl_platform.h.orig	2020-06-18 22:38:47 UTC
++++ cl_platform.h
+@@ -429,7 +429,9 @@ typedef unsigned int cl_GLenum;
+ 
+ /* Define basic vector types */
+ #if defined( __VEC__ )
+-   #include <altivec.h>   /* may be omitted depending on compiler. AltiVec spec provides no way to detect whether the header is required. */
++#  if !defined(__clang__)
++     #include <altivec.h>   /* may be omitted depending on compiler. AltiVec spec provides no way to detect whether the header is required. */
++#  endif
+    typedef vector unsigned char     __cl_uchar16;
+    typedef vector signed char       __cl_char16;
+    typedef vector unsigned short    __cl_ushort8;