diff --git a/var/spack/repos/builtin/packages/pocl/package.py b/var/spack/repos/builtin/packages/pocl/package.py
index e22b6b4747..da19e674a7 100644
--- a/var/spack/repos/builtin/packages/pocl/package.py
+++ b/var/spack/repos/builtin/packages/pocl/package.py
@@ -56,7 +56,7 @@ class Pocl(CMakePackage):
     # (see #1616)
     # These are the supported LLVM versions
     depends_on("llvm +clang @6.0:11.0", when="@master")
-    depends_on("llvm +clang +shared_libs @6.0:11.0", when="@1.6")
+    depends_on("llvm +clang +shared_libs -flang @6.0:11.0", when="@1.6")
     depends_on("llvm +clang @6.0:10.0", when="@1.5")
     depends_on("llvm +clang @6.0:9.0", when="@1.4")
     depends_on("llvm +clang @5.0:8.0", when="@1.3")