diff --git a/easybuild/easyconfigs/c/Clang/Clang-11.0.0-GCCcore-9.3.0.eb b/easybuild/easyconfigs/c/Clang/Clang-11.0.0-GCCcore-9.3.0.eb
index 746d496a831d..ab121752b0a7 100644
--- a/easybuild/easyconfigs/c/Clang/Clang-11.0.0-GCCcore-9.3.0.eb
+++ b/easybuild/easyconfigs/c/Clang/Clang-11.0.0-GCCcore-9.3.0.eb
@@ -18,8 +18,6 @@ description = """C, C++, Objective-C compiler, based on LLVM.  Does not
 # Clang also depends on libstdc++ during runtime, but this dependency is
 # already specified as the toolchain.
 toolchain = {'name': 'GCCcore', 'version': '9.3.0'}
-# Do not set optarch to True: it will cause the build to fail
-toolchainopts = {'optarch': False}
 
 source_urls = ["https://github.com/llvm/llvm-project/releases/download/llvmorg-%(version)s"]
 sources = [