diff --git a/src/interop/base.jl b/src/interop/base.jl
index 7cb39ff7..40ce2728 100644
--- a/src/interop/base.jl
+++ b/src/interop/base.jl
@@ -60,7 +60,11 @@ Return if a type would be boxed when instantiated in the code generator.
 """
 function isboxed(typ::Type)
     isboxed_ref = Ref{Bool}()
-    ccall(:julia_type_to_llvm, LLVM.API.LLVMTypeRef, (Any, Ptr{Bool}), typ, isboxed_ref)
+    if VERSION >= v"1.5.0-DEV.393"
+        ccall(:jl_type_to_llvm, LLVM.API.LLVMTypeRef, (Any, Ptr{Bool}), typ, isboxed_ref)
+    else
+        ccall(:julia_type_to_llvm, LLVM.API.LLVMTypeRef, (Any, Ptr{Bool}), typ, isboxed_ref)
+    end
     return isboxed_ref[]
 end
 
@@ -71,8 +75,13 @@ Convert a Julia type `typ` to its LLVM representation. Fails if the type would b
 """
 function Base.convert(::Type{LLVMType}, typ::Type, allow_boxed::Bool=false)
     isboxed_ref = Ref{Bool}()
-    llvmtyp = LLVMType(ccall(:julia_type_to_llvm, LLVM.API.LLVMTypeRef,
-                             (Any, Ptr{Bool}), typ, isboxed_ref))
+    if VERSION >= v"1.5.0-DEV.393"
+        llvmtyp = LLVMType(ccall(:jl_type_to_llvm, LLVM.API.LLVMTypeRef,
+                                 (Any, Ptr{Bool}), typ, isboxed_ref))
+    else
+        llvmtyp = LLVMType(ccall(:julia_type_to_llvm, LLVM.API.LLVMTypeRef,
+                                 (Any, Ptr{Bool}), typ, isboxed_ref))
+    end
     if !allow_boxed && isboxed_ref[]
         error("Conversion of boxed type $typ is not allowed")
     end
diff --git a/test/core.jl b/test/core.jl
index 9b340f7d..6f844619 100644
--- a/test/core.jl
+++ b/test/core.jl
@@ -444,13 +444,6 @@ LLVM.Module("SomeModule", ctx) do mod
         unsafe_delete!(mod, gv)
         @test isempty(gvars)
     end
-
-    # bug: PointerNull wasn't a constant, and couldn't be used as an initializer
-    let ptrtyp = LLVM.PointerType(LLVM.VoidType(ctx))
-        gv = GlobalVariable(mod, ptrtyp, "SomeOtherGlobal")
-        init = PointerNull(ptrtyp)
-        initializer!(gv, init)
-    end
 end
 end