diff --git a/pkgs/llvm-ompss2/clang.nix b/pkgs/llvm-ompss2/clang.nix
index 0112de9..43bf065 100644
--- a/pkgs/llvm-ompss2/clang.nix
+++ b/pkgs/llvm-ompss2/clang.nix
@@ -85,7 +85,6 @@ in stdenv.mkDerivation rec {
   cmakeBuildType = if enableDebug then "Debug" else "Release";
 
   dontUseCmakeBuildDir = true;
-  enableAssertions = if enableDebug then "ON" else "OFF";
 
   # Fix the host triple, as it has changed in a newer config.guess:
   # https://git.savannah.gnu.org/gitweb/?p=config.git;a=commitdiff;h=ca9bfb8cc75a2be1819d89c664a867785c96c9ba
@@ -105,7 +104,7 @@ in stdenv.mkDerivation rec {
       "-DCMAKE_EXE_LINKER_FLAGS_DEBUG=-Wl,-gdb-index"
       "-DLLVM_LIT_ARGS=-sv --xunit-xml-output=xunit.xml"
       "-DLLVM_ENABLE_PROJECTS=clang;openmp;compiler-rt;lld"
-      "-DLLVM_ENABLE_ASSERTIONS=${enableAssertions}"
+      "-DLLVM_ENABLE_ASSERTIONS=ON"
       "-DLLVM_INSTALL_TOOLCHAIN_ONLY=ON"
       "-DCMAKE_INSTALL_BINDIR=bin"
       "-DLLVM_ENABLE_ZLIB=FORCE_ON"