diff --git a/ci/run.sh b/ci/run.sh
index d130df03ae18..c30c77fdffaa 100755
--- a/ci/run.sh
+++ b/ci/run.sh
@@ -61,7 +61,12 @@ build() {
     if [ "$OS_NAME" != "windows" ]; then
         source ~/dlang/*/activate # activate host compiler, incl. setting `DMD`
     fi
-    $DMD compiler/src/build.d -ofgenerated/build
+    BUILD_DFLAGS=
+    if [ "$OS_NAME" == "osx" ]; then
+        BUILD_DFLAGS="-L-ld_classic"
+        CI_DFLAGS="$CI_DFLAGS $BUILD_DFLAGS"
+    fi
+    $DMD compiler/src/build.d -ofgenerated/build $BUILD_DFLAGS
     generated/build -j$N MODEL=$MODEL HOST_DMD=$DMD DFLAGS="$CI_DFLAGS" BUILD=debug unittest
     generated/build -j$N MODEL=$MODEL HOST_DMD=$DMD DFLAGS="$CI_DFLAGS" ENABLE_RELEASE=1 dmd
     make -j$N -C druntime MODEL=$MODEL