diff --git a/common/init.c b/common/init.c
index 199b4c55..cc868646 100644
--- a/common/init.c
+++ b/common/init.c
@@ -5,6 +5,8 @@
 #include "ui.h"
 #include "uipriv.h"
 
+// TODO rename this file to main.c
+
 static bool initialized = false;
 
 bool uiInit(void *options, uiInitError *err)
@@ -47,6 +49,15 @@ bool uiprivInitReturnErrorf(uiInitError *err, const char *msg, ...)
 	return false;
 }
 
+void uiQueueMain(void (*f)(void *data), void *data)
+{
+	if (!initialized) {
+		uiprivProgrammerError(uiprivProgrammerErrorNotInitialized, uiprivFunc);
+		return;
+	}
+	uiprivSysQueueMain(f, data);
+}
+
 bool uiprivCheckInitializedAndThreadImpl(const char *func)
 {
 	// While it does seem risky to not lock this, if this changes during the execution of this function it means only that it was changed from a different thread, and since it can only change from false to true, an error will be reported anyway.
diff --git a/common/uipriv.h b/common/uipriv.h
index 48f02574..0b84a74a 100644
--- a/common/uipriv.h
+++ b/common/uipriv.h
@@ -22,6 +22,7 @@ extern "C" {
 // init.c
 extern bool uiprivSysInit(void *options, uiInitError *err);
 extern bool uiprivInitReturnErrorf(uiInitError *err, const char *msg, ...);
+extern void uiprivSysQueueMain(void (*f)(void *data), void *data);
 extern bool uiprivCheckInitializedAndThreadImpl(const char *func);
 #define uiprivCheckInitializedAndThread() uiprivCheckInitializedAndThreadImpl(uiprivFunc)
 extern bool uiprivSysCheckThread(void);
diff --git a/darwin/main.m b/darwin/main.m
index 78e01c57..c1d9b6cb 100644
--- a/darwin/main.m
+++ b/darwin/main.m
@@ -37,12 +37,12 @@ static uiprivApplicationDelegate *uiprivAppDelegate;
 @end
 
 static pthread_t mainThread;
-static BOOL initialized = NO;		// TODO deduplicate this from common/init.c
 
 bool uiprivSysInit(void *options, uiInitError *err)
 {
 	uiprivApp = [uiprivApplication sharedApplication];
 	if (![NSApp isKindOfClass:[uiprivApplication class]])
+		// TODO verify if Info.plist (both in a proper .app bundle and embedded into a standalone binary) can override this and, if so, add that tidbit to this message
 		return uiprivInitReturnErrorf(err, "NSApp is not of type uiprivApplication; was likely already initialized beforehand");
 
 	// don't check for a NO return; something (launch services?) causes running from application bundles to always return NO when asking to change activation policy, even if the change is to the same activation policy!
@@ -53,7 +53,6 @@ bool uiprivSysInit(void *options, uiInitError *err)
 	[uiprivApp setDelegate:uiprivAppDelegate];
 
 	mainThread = pthread_self();
-	initialized = YES;
 	return true;
 }
 
@@ -88,12 +87,8 @@ void uiQuit(void)
 }
 
 // thanks to mikeash in irc.freenode.net/#macdev for suggesting the use of Grand Central Dispatch for this
-void uiQueueMain(void (*f)(void *data), void *data)
+void uiprivSysQueueMain(void (*f)(void *data), void *data)
 {
-	if (!initialized) {
-		uiprivProgrammerError(uiprivProgrammerErrorNotInitialized, uiprivFunc);
-		return;
-	}
 	// dispatch_get_main_queue() is a serial queue so it will not execute multiple uiQueueMain() functions concurrently
 	// the signature of f matches dispatch_function_t
 	dispatch_async_f(dispatch_get_main_queue(), data, f);
diff --git a/unix/main.c b/unix/main.c
index 6904ef52..02099917 100644
--- a/unix/main.c
+++ b/unix/main.c
@@ -2,7 +2,6 @@
 #include "uipriv_unix.h"
 
 static pthread_t mainThread;
-static gboolean initialized = FALSE;		// TODO deduplicate this from common/init.c
 
 bool uiprivSysInit(void *options, uiInitError *err)
 {
@@ -14,7 +13,6 @@ bool uiprivSysInit(void *options, uiInitError *err)
 		return false;
 	}
 	mainThread = pthread_self();
-	initialized = TRUE;
 	return true;
 }
 
@@ -46,14 +44,10 @@ static gboolean doqueued(gpointer data)
 	return FALSE;
 }
 
-void uiQueueMain(void (*f)(void *data), void *data)
+void uiprivSysQueueMain(void (*f)(void *data), void *data)
 {
 	struct queued *q;
 
-	if (!initialized) {
-		uiprivProgrammerError(uiprivProgrammerErrorNotInitialized, uiprivFunc);
-		return;
-	}
 	q = g_new0(struct queued, 1);
 	q->f = f;
 	q->data = data;
diff --git a/windows/main.cpp b/windows/main.cpp
index 3f2f4acf..8fd276ad 100644
--- a/windows/main.cpp
+++ b/windows/main.cpp
@@ -45,7 +45,6 @@ static inline void setHInstance(void)
 #define uiprivInitReturnHRESULT(err, msg, hr) uiprivInitReturnErrorf(err, "%s: 0x%08I32X", msg, hr)
 
 static DWORD mainThread;
-static BOOL initialized = FALSE;		// TODO deduplicate this from common/init.c
 
 bool uiprivSysInit(void *options, uiInitError *err)
 {
@@ -92,7 +91,6 @@ bool uiprivSysInit(void *options, uiInitError *err)
 	// LONGTERM turn off COM exception handling
 */
 	mainThread = GetCurrentThreadId();
-	initialized = TRUE;
 	return true;
 }
 
@@ -124,14 +122,10 @@ void uiQuit(void)
 	PostQuitMessage(0);
 }
 
-void uiQueueMain(void (*f)(void *data), void *data)
+void uiprivSysQueueMain(void (*f)(void *data), void *data)
 {
 	HRESULT hr;
 
-	if (!initialized) {
-		uiprivProgrammerError(uiprivProgrammerErrorNotInitialized, uiprivFunc);
-		return;
-	}
 	hr = uiprivHrPostMessageW(uiprivUtilWindow, uiprivUtilWindowMsgQueueMain, (WPARAM) f, (LPARAM) data);
 	if (hr != S_OK) {
 		// TODO handle error