diff --git a/pkgs/development/compilers/llvm/15/compiler-rt/default.nix b/pkgs/development/compilers/llvm/15/compiler-rt/default.nix
index bc7195b836a1..722a5bd90cbd 100644
--- a/pkgs/development/compilers/llvm/15/compiler-rt/default.nix
+++ b/pkgs/development/compilers/llvm/15/compiler-rt/default.nix
@@ -152,8 +152,5 @@ stdenv.mkDerivation {
       implementations of run-time libraries for dynamic testing tools such as
       AddressSanitizer, ThreadSanitizer, MemorySanitizer, and DataFlowSanitizer.
     '';
-    # "All of the code in the compiler-rt project is dual licensed under the MIT
-    # license and the UIUC License (a BSD-like license)":
-    license = with lib.licenses; [ mit ncsa ];
   };
 }
diff --git a/pkgs/development/compilers/llvm/15/default.nix b/pkgs/development/compilers/llvm/15/default.nix
index b72dc3f18281..08647a736f1a 100644
--- a/pkgs/development/compilers/llvm/15/default.nix
+++ b/pkgs/development/compilers/llvm/15/default.nix
@@ -35,7 +35,7 @@ let
   };
 
   llvm_meta = {
-    license     = lib.licenses.ncsa;
+    license     = with lib.licenses; [ ncsa llvm-exception ];
     maintainers = lib.teams.llvm.members;
     platforms   = lib.platforms.all;
   };
diff --git a/pkgs/development/compilers/llvm/15/libcxx/default.nix b/pkgs/development/compilers/llvm/15/libcxx/default.nix
index 94374c8a312d..7762df29386e 100644
--- a/pkgs/development/compilers/llvm/15/libcxx/default.nix
+++ b/pkgs/development/compilers/llvm/15/libcxx/default.nix
@@ -103,8 +103,5 @@ stdenv.mkDerivation rec {
       libc++ is an implementation of the C++ standard library, targeting C++11,
       C++14 and above.
     '';
-    # "All of the code in libc++ is dual licensed under the MIT license and the
-    # UIUC License (a BSD-like license)":
-    license = with lib.licenses; [ mit ncsa ];
   };
 }
diff --git a/pkgs/development/compilers/llvm/15/libcxxabi/default.nix b/pkgs/development/compilers/llvm/15/libcxxabi/default.nix
index cb5fa44f0700..fd99f4553c0c 100644
--- a/pkgs/development/compilers/llvm/15/libcxxabi/default.nix
+++ b/pkgs/development/compilers/llvm/15/libcxxabi/default.nix
@@ -100,9 +100,6 @@ stdenv.mkDerivation rec {
     longDescription = ''
       libc++abi is a new implementation of low level support for a standard C++ library.
     '';
-    # "All of the code in libc++abi is dual licensed under the MIT license and
-    # the UIUC License (a BSD-like license)":
-    license = with lib.licenses; [ mit ncsa ];
     maintainers = llvm_meta.maintainers ++ [ lib.maintainers.vlstill ];
   };
 }
diff --git a/pkgs/development/compilers/llvm/15/openmp/default.nix b/pkgs/development/compilers/llvm/15/openmp/default.nix
index d51335436ad2..8047cb1122de 100644
--- a/pkgs/development/compilers/llvm/15/openmp/default.nix
+++ b/pkgs/development/compilers/llvm/15/openmp/default.nix
@@ -67,8 +67,5 @@ stdenv.mkDerivation rec {
       "clang -fopenmp" must be linked before it can run and the library that
       supports offload to target devices.
     '';
-    # "All of the code is dual licensed under the MIT license and the UIUC
-    # License (a BSD-like license)":
-    license = with lib.licenses; [ mit ncsa ];
   };
 }