diff --git a/hw/kdrive/ephyr/hostx.c b/hw/kdrive/ephyr/hostx.c
index 2b69b0e6c..1261487a8 100644
--- a/hw/kdrive/ephyr/hostx.c
+++ b/hw/kdrive/ephyr/hostx.c
@@ -1157,21 +1157,6 @@ hostx_get_window_attributes(int a_window, EphyrHostWindowAttributes * a_attrs)
     return TRUE;
 }
 
-int
-hostx_get_extension_info(const char *a_ext_name,
-                         int *a_major_opcode,
-                         int *a_first_event, int *a_first_error)
-{
-    if (!a_ext_name || !a_major_opcode || !a_first_event || !a_first_error)
-        return 0;
-    if (!XQueryExtension(HostX.dpy,
-                         a_ext_name,
-                         a_major_opcode, a_first_event, a_first_error)) {
-        return 0;
-    }
-    return 1;
-}
-
 int
 hostx_get_visuals_info(EphyrHostVisualInfo ** a_visuals, int *a_num_entries)
 {
diff --git a/hw/kdrive/ephyr/hostx.h b/hw/kdrive/ephyr/hostx.h
index c065f2d39..1c01f8b7d 100644
--- a/hw/kdrive/ephyr/hostx.h
+++ b/hw/kdrive/ephyr/hostx.h
@@ -219,11 +219,6 @@ int
 int
  hostx_get_window_attributes(int a_window, EphyrHostWindowAttributes * a_attr);
 
-int
-
-hostx_get_extension_info(const char *a_ext_name,
-                         int *a_major_opcode,
-                         int *a_first_even, int *a_first_error);
 int
  hostx_get_visuals_info(EphyrHostVisualInfo ** a_visuals, int *a_num_entries);