diff --git a/OpenCL/inc_types.cl b/OpenCL/inc_types.cl
index 25b8d7868..96a608a6a 100644
--- a/OpenCL/inc_types.cl
+++ b/OpenCL/inc_types.cl
@@ -753,25 +753,29 @@ typedef struct luks_tmp
   {
     u32 ipad32[32];
     u64 ipad64[16];
-  };
+
+  } ipad;
 
   union
   {
     u32 opad32[32];
     u64 opad64[16];
-  };
+
+  } opad;
 
   union
   {
     u32 dgst32[32];
     u64 dgst64[16];
-  };
+
+  } dgst;
 
   union
   {
     u32 out32[32];
     u64 out64[16];
-  };
+
+  } out;
 
 } luks_tmp_t;
 
diff --git a/include/interface.h b/include/interface.h
index 7d72c49d7..ac18817b0 100644
--- a/include/interface.h
+++ b/include/interface.h
@@ -135,25 +135,29 @@ typedef struct luks_tmp
   {
     u32 ipad32[32];
     u64 ipad64[16];
-  };
+
+  } ipad;
 
   union
   {
     u32 opad32[32];
     u64 opad64[16];
-  };
+
+  } opad;
 
   union
   {
     u32 dgst32[32];
     u64 dgst64[16];
-  };
+
+  } dgst;
 
   union
   {
     u32 out32[32];
     u64 out64[16];
-  };
+
+  } out;
 
 } luks_tmp_t;