1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/development/libraries/prometheus-client-c/default.nix b/pkgs/development/libraries/prometheus-client-c/default.nix
index 938d16d3776..f9f580c9717 100644
--- a/pkgs/development/libraries/prometheus-client-c/default.nix
+++ b/pkgs/development/libraries/prometheus-client-c/default.nix
@@ -48,7 +48,7 @@ let
       #   ld: CMakeFiles/prom.dir/src/prom_process_stat.c.o:(.bss+0x0): multiple definition of
       #     `prom_process_start_time_seconds'; CMakeFiles/prom.dir/src/prom_collector.c.o:(.bss+0x0): first defined here
       # Should be fixed in 1.2.0 and later: https://github.com/digitalocean/prometheus-client-c/pull/25
-      NIX_CFLAGS_COMPILE = "-fcommon";
+      env.NIX_CFLAGS_COMPILE = "-fcommon";
 
       preConfigure = ''
         cd ${subdir}