diff --git a/pkgs/development/r-modules/default.nix b/pkgs/development/r-modules/default.nix
index 1e5420467e12..d7a5e1917bc9 100644
--- a/pkgs/development/r-modules/default.nix
+++ b/pkgs/development/r-modules/default.nix
@@ -1822,6 +1822,7 @@ let
 
     rhdf5= old.rhdf5.overrideAttrs (attrs: {
       patches = [ ./patches/rhdf5.patch ];
+      env.NIX_CFLAGS_COMPILE = "-Wno-error=implicit-function-declaration";
     });
 
     rmarkdown = old.rmarkdown.overrideAttrs (_: {