diff --git a/gintro/cairo.nim b/gintro/cairo.nim
index 506ad74..363a1f2 100644
--- a/gintro/cairo.nim
+++ b/gintro/cairo.nim
@@ -138,7 +138,7 @@ type
     x*: cdouble
     y*: cdouble
 
-  PathData00* = object {.union.}
+  PathData00* {.union.} = object
     header*: INNER_C_STRUCT_3330700347
     point*: INNER_C_STRUCT_1651263489
 
diff --git a/gintro/gimpl.nim b/gintro/gimpl.nim
index d46fac5..7e4757f 100644
--- a/gintro/gimpl.nim
+++ b/gintro/gimpl.nim
@@ -85,9 +85,11 @@ proc $1$2 {.cdecl.} =
           ipos = i
           break
       assert(ipos >= 0)
-      let ipronode = p.symbol.getImpl().params[ipos + 1][1] # the actual data type for interface providers
+      #let ipronode = p.symbol.getImpl().params[ipos + 1][1] # the actual data type for interface providers
+      let ipronode = p.getImpl().params[ipos + 1][1]
       if ipronode.isNil:
-        quit("Error: Signal-Handler has too few parameters: " & $(p.symbol.getImpl().name.toStrLit) & $(p.symbol.getImpl().params.toStrLit))
+        #quit("Error: Signal-Handler has too few parameters: " & $(p.symbol.getImpl().name.toStrLit) & $(p.symbol.getImpl().params.toStrLit))
+        quit("Error: Signal-Handler has too few parameters: " & $(p.getImpl().name.toStrLit) & $(p.getImpl().params.toStrLit))
       else:
         ipro = $(ipronode.toStrLit)
       var ipros = hargs[ipos].split(" | ")
diff --git a/tests/gen.nim b/tests/gen.nim
index 1012910..e6a92e4 100644
--- a/tests/gen.nim
+++ b/tests/gen.nim
@@ -1,5 +1,5 @@
 # High level gobject-introspection based GTK3 bindings for the Nim programming language
-# v 0.4.7 2018-OCT-22
+# v 0.4.8 2019-JAN-15
 # (c) S. Salewski 2018
 
 # https://wiki.gnome.org/Projects/GObjectIntrospection
@@ -880,7 +880,8 @@ proc writeMethod(info: GIBaseInfo; minfo: GIFunctionInfo; genProxy = false) =
 proc writeUnion(info: GIUnionInfo) =
   if not suppressType:
     output.writeLine("type")
-  output.writeLine("  ", mangleName(gBaseInfoGetName(info)) & "00" & EM, " = object {.union.}")
+  #output.writeLine("  ", mangleName(gBaseInfoGetName(info)) & "00" & EM, " = object {.union.}")
+  output.writeLine("  ", mangleName(gBaseInfoGetName(info)) & "00" & EM, " {.union.} = object")
   let n = info.gUnionInfoGetNFields()
   for j in 0.cint ..< n:
     let field = info.gUnionInfoGetField(j)