diff --git a/README.md b/README.md
index 9201494..2bff58d 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ For more details check out the `build-matrix.sh` script and meson files.
 | episode1    | -       | -     |
 | eye         | x86     | x86   |
 | gmod        | x86     | -     |
-| hl2dm       | x86     | x86   |
+| hl2dm       | x86     | -     |
 | insurgency  | -       | -     |
 | l4d         | x86     | x86   |
 | l4d2        | x86     | x86   |
diff --git a/build-matrix.sh b/build-matrix.sh
index 34f449b..820162e 100755
--- a/build-matrix.sh
+++ b/build-matrix.sh
@@ -80,7 +80,7 @@ do
             # Should we always define NO_MALLOC_OVERRIDE on clang?
             if [ "$CMP" = "clang++" ]
             then
-                if [ "$BRANCH" = "gmod" ] || [ "$BRANCH" = "tf2" ]
+                if [ "$BRANCH" = "gmod" ] || [ "$BRANCH" = "tf2" ] || [ "$BRANCH" = "hl2dm" ]
                 then
                     echo "$BRANCH does not support $CMP, skipping!"
                     continue