diff --git a/pkgs/development/compilers/tinycc/default.nix b/pkgs/development/compilers/tinycc/default.nix
index a848accf1666..b36eb44229d1 100644
--- a/pkgs/development/compilers/tinycc/default.nix
+++ b/pkgs/development/compilers/tinycc/default.nix
@@ -79,6 +79,11 @@ stdenv.mkDerivation (finalAttrs: {
     configureFlagsArray+=("--elfinterp=$(< $NIX_CC/nix-support/dynamic-linker)")
   '';
 
+  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.cc.isClang [
+    "-Wno-error=implicit-int"
+    "-Wno-error=int-conversion"
+  ]);
+
   # Test segfault for static build
   doCheck = !stdenv.hostPlatform.isStatic;