diff --git a/src/mlir/Dialects.jl b/src/mlir/Dialects.jl
index 50a90efff..87c63b199 100644
--- a/src/mlir/Dialects.jl
+++ b/src/mlir/Dialects.jl
@@ -17,6 +17,7 @@ function operandsegmentsizes(segments)
 end
 
 for file in readdir(joinpath(@__DIR__, "Dialects"))
+    endswith(file, ".jl") || continue
     include(joinpath(@__DIR__, "Dialects", file))
 end