diff --git a/tests/arc/t14472.nim b/tests/arc/t14472.nim
index bb6897f2df..984ecaf66f 100644
--- a/tests/arc/t14472.nim
+++ b/tests/arc/t14472.nim
@@ -30,11 +30,11 @@ var s = bork()
 import tables
 
 type
-  cdbl {.importc: "double".} = object
+  cdbl {.importc: "double", nodecl.} = object
 
   MyObject = ref object of RootObj
     y: Table[string, cdbl]
-        
+
 
 proc test =
   var x = new(MyObject)
diff --git a/tests/ccgbugs/tcgbug.nim b/tests/ccgbugs/tcgbug.nim
index 2eddc6fddc..9ce1586424 100644
--- a/tests/ccgbugs/tcgbug.nim
+++ b/tests/ccgbugs/tcgbug.nim
@@ -140,7 +140,7 @@ block: # bug #9940
 typedef struct { int base; } S;
 """.}
 
-  type S {.importc: "S", completeStruct.} = object
+  type S {.importc: "S", nodecl, completeStruct.} = object
     base: cint
   proc init(x:ptr S) =
     x.base = 1
diff --git a/tests/cpp/tget_subsystem.nim b/tests/cpp/tget_subsystem.nim
index 6fb095a3de..05ef9ca59c 100644
--- a/tests/cpp/tget_subsystem.nim
+++ b/tests/cpp/tget_subsystem.nim
@@ -15,7 +15,7 @@ struct SystemManager {
 
 """.}
 
-type Input {.importcpp: "System::Input".} = object
+type Input {.importcpp: "System::Input", nodecl.} = object
 proc getSubsystem*[T](): ptr T {.
   importcpp: "SystemManager::getSubsystem<'*0>()", nodecl.}
 
diff --git a/tests/misc/msizeof5.nim b/tests/misc/msizeof5.nim
index 63573a705b..43e292b108 100644
--- a/tests/misc/msizeof5.nim
+++ b/tests/misc/msizeof5.nim
@@ -26,7 +26,7 @@ template ensureCgen(T: typedesc) =
   var a {.volatile.}: T
 
 block:
-  type Foo1Alias{.importc: "struct Foo1", size: sizeof(cint).} = object
+  type Foo1Alias{.importc: "struct Foo1", nodecl, size: sizeof(cint).} = object
     a: cint
   ensureCgen Foo1Alias
 
diff --git a/tests/misc/tsizeof.nim b/tests/misc/tsizeof.nim
index 65756bbce7..d33ba8212d 100644
--- a/tests/misc/tsizeof.nim
+++ b/tests/misc/tsizeof.nim
@@ -488,7 +488,7 @@ typedef struct{
 """.}
 
 type
-  Foo {.importc.} = object
+  Foo {.importc, nodecl.} = object
 
   Bar = object
     b: byte
@@ -549,7 +549,7 @@ doAssert alignof(MyCustomAlignObject) == 32
 ##########################################
 
 type
-  imported_double {.importc: "double".} = object
+  imported_double {.importc: "double", nodecl.} = object
 
   Pod = object
     v* : imported_double
diff --git a/tests/overload/tstatic_with_converter.nim b/tests/overload/tstatic_with_converter.nim
index 2bc1dfaab6..3f8b226cd2 100644
--- a/tests/overload/tstatic_with_converter.nim
+++ b/tests/overload/tstatic_with_converter.nim
@@ -15,7 +15,7 @@ cimported set1_imported(double x) {
  
 """}
  
-type vfloat{.importc: "cimported".} = object
+type vfloat{.importc: "cimported", nodecl.} = object
  
 proc set1(a: float): vfloat {.importc: "set1_imported".}