diff --git a/src/julia_internal.h b/src/julia_internal.h
index 1137e7a22d47b..79f9e1fba0703 100644
--- a/src/julia_internal.h
+++ b/src/julia_internal.h
@@ -1429,7 +1429,6 @@ JL_DLLEXPORT jl_value_t *jl_abs_float(jl_value_t *a);
 JL_DLLEXPORT jl_value_t *jl_copysign_float(jl_value_t *a, jl_value_t *b);
 JL_DLLEXPORT jl_value_t *jl_flipsign_int(jl_value_t *a, jl_value_t *b);
 
-JL_DLLEXPORT jl_value_t *jl_arraylen(jl_value_t *a);
 JL_DLLEXPORT jl_value_t *jl_have_fma(jl_value_t *a);
 JL_DLLEXPORT int jl_stored_inline(jl_value_t *el_type);
 JL_DLLEXPORT jl_value_t *(jl_array_data_owner)(jl_array_t *a);