diff --git a/include/modules.h b/include/modules.h
index 62078bbfa8..41dec1194c 100644
--- a/include/modules.h
+++ b/include/modules.h
@@ -1124,7 +1124,7 @@ class CoreExport ModuleManager : public fakederef<ModuleManager>
 	 * SetPriority method for this, where you may specify other modules to
 	 * be prioritized against.
 	 */
-	bool SetPriority(Module* mod, Priority s);
+	void SetPriority(Module* mod, Priority s);
 
 	/** Attach an event to a module.
 	 * You may later detatch the event with ModuleManager::Detach().
diff --git a/src/modules.cpp b/src/modules.cpp
index 78e80d63ca..e1fb605c0a 100644
--- a/src/modules.cpp
+++ b/src/modules.cpp
@@ -199,12 +199,10 @@ void ModuleManager::DetachAll(Module* mod)
 		Detach((Implementation)n, mod);
 }
 
-bool ModuleManager::SetPriority(Module* mod, Priority s)
+void ModuleManager::SetPriority(Module* mod, Priority s)
 {
 	for (size_t n = 0; n != I_END; ++n)
 		SetPriority(mod, (Implementation)n, s);
-
-	return true;
 }
 
 bool ModuleManager::SetPriority(Module* mod, Implementation i, Priority s, Module* which)