diff --git a/common/controls.c b/common/controls.c
index 77ea85e9..294a2eab 100644
--- a/common/controls.c
+++ b/common/controls.c
@@ -1,6 +1,5 @@
 // 8 june 2019
 #include "uipriv.h"
-#include "testhooks.h"
 
 struct controlType {
 	uint32_t id;
diff --git a/common/errors.c b/common/errors.c
index c7a8448d..ec0c79d9 100644
--- a/common/errors.c
+++ b/common/errors.c
@@ -1,6 +1,5 @@
 // 12 may 2019
 #include "uipriv.h"
-#include "testhooks.h"
 
 #define internalErrorPrefix "libui internal error"
 // TODO add debugging advice?
diff --git a/common/main.c b/common/main.c
index 5aa3b61c..6156e232 100644
--- a/common/main.c
+++ b/common/main.c
@@ -1,6 +1,5 @@
 // 19 april 2019
 #include "uipriv.h"
-#include "testhooks.h"
 
 enum {
 	stateUninitialized,
diff --git a/common/uipriv.h b/common/uipriv.h
index 7cb3b5a1..77c94801 100644
--- a/common/uipriv.h
+++ b/common/uipriv.h
@@ -9,6 +9,7 @@
 #ifdef uiprivOSHeader
 #include uiprivOSHeader
 #endif
+#include "testhooks.h"
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/test/controls.c b/test/controls.c
index 705ad097..541fd39a 100644
--- a/test/controls.c
+++ b/test/controls.c
@@ -1,6 +1,5 @@
 // 8 june 2019
 #include "test.h"
-#include "../common/testhooks.h"
 
 static bool vtableNopInit(uiControl *c, void *implData, void *initData)
 {
diff --git a/test/errors.c b/test/errors.c
index 74be6610..71e3a960 100644
--- a/test/errors.c
+++ b/test/errors.c
@@ -1,7 +1,6 @@
 // 28 may 2019
 #include "test.h"
 #include "thread.h"
-#include "../common/testhooks.h"
 
 // Do not put any test cases in this file; they will not be run.
 
diff --git a/test/initmain.c b/test/initmain.c
index cfc3ab8a..066510ad 100644
--- a/test/initmain.c
+++ b/test/initmain.c
@@ -1,7 +1,6 @@
 // 10 april 2019
 #include "test.h"
 #include "thread.h"
-#include "../common/testhooks.h"
 
 static void testImplInitFailureFull(const char *file, long line)
 {
diff --git a/test/test.h b/test/test.h
index a0a1e674..39cfc521 100644
--- a/test/test.h
+++ b/test/test.h
@@ -11,6 +11,7 @@
 #ifdef libuiOSHeader
 #include libuiOSHeader
 #endif
+#include "../common/testhooks.h"
 
 #ifdef __cplusplus
 extern "C" {