diff --git a/src/dedicated/i_system.c b/src/dedicated/i_system.c
index 858dfaf20..413b366b8 100644
--- a/src/dedicated/i_system.c
+++ b/src/dedicated/i_system.c
@@ -1585,5 +1585,15 @@ void I_GetCursorPosition(INT32 *x, INT32 *y)
 	(void)y;
 }
 
+void I_SetTextInputMode(boolean active)
+{
+	(void)active;
+}
+
+boolean I_GetTextInputMode(void)
+{
+	return false;
+}
+
 #include "../sdl/dosstr.c"
 
diff --git a/src/dummy/i_system.c b/src/dummy/i_system.c
index ecabe3576..99bfa9f36 100644
--- a/src/dummy/i_system.c
+++ b/src/dummy/i_system.c
@@ -211,5 +211,15 @@ const char *I_GetSysName(void)
 	return NULL;
 }
 
+void I_SetTextInputMode(boolean active)
+{
+	(void)active;
+}
+
+boolean I_GetTextInputMode(void)
+{
+	return false;
+}
+
 #include "../sdl/dosstr.c"