diff --git a/source/vid_3dfxsvga.c b/source/vid_3dfxsvga.c
index b0dfc13..5d3a2f5 100644
--- a/source/vid_3dfxsvga.c
+++ b/source/vid_3dfxsvga.c
@@ -646,3 +646,6 @@ VID_UnlockBuffer ( void )
 {       
 }       
 
+void VID_SetCaption (char *text)
+{
+}
diff --git a/source/vid_ggi.c b/source/vid_ggi.c
index a7c24db..48c2273 100644
--- a/source/vid_ggi.c
+++ b/source/vid_ggi.c
@@ -991,3 +991,8 @@ IN_Move(usercmd_t *cmd)
 void VID_InitCvars(void)	{}
 void VID_LockBuffer(void)	{}
 void VID_UnlockBuffer(void) {}
+
+void VID_SetCaption (char *text)
+{
+}
+
diff --git a/source/vid_glx.c b/source/vid_glx.c
index ad5ecee..9ea8961 100644
--- a/source/vid_glx.c
+++ b/source/vid_glx.c
@@ -689,3 +689,6 @@ VID_UnlockBuffer ( void )
 {
 }
 
+void VID_SetCaption (char *text)
+{
+}
diff --git a/source/vid_null.c b/source/vid_null.c
index 6d66d15..e89409a 100644
--- a/source/vid_null.c
+++ b/source/vid_null.c
@@ -94,4 +94,6 @@ void D_EndDirectRect (int x, int y, int width, int height)
 {
 }
 
-
+void VID_SetCaption (char *text)
+{
+}
diff --git a/source/vid_svgalib.c b/source/vid_svgalib.c
index b52b006..b760450 100644
--- a/source/vid_svgalib.c
+++ b/source/vid_svgalib.c
@@ -711,3 +711,6 @@ VID_UnlockBuffer ( void )
 {       
 }       
 
+void VID_SetCaption (char *text)
+{
+}
diff --git a/source/vid_x11.c b/source/vid_x11.c
index 433cddd..1595bce 100644
--- a/source/vid_x11.c
+++ b/source/vid_x11.c
@@ -895,3 +895,6 @@ VID_UnlockBuffer ( void )
 {       
 }       
 
+void VID_SetCaption (char *text)
+{
+}