diff --git a/changes/7.0.0-preview.4.md b/changes/7.0.0-preview.4.md
index 6cf8aab3b..e53ae0cad 100644
--- a/changes/7.0.0-preview.4.md
+++ b/changes/7.0.0-preview.4.md
@@ -6,3 +6,4 @@
  - Fix shape of Copyleft Symbol `U+1F12F` (#1034).
  - Fix incorrect mapping of `U+037B` and `U+03FD` (#1036).
  - Correct glyph of `U+2411` (#1037).
+ - Make `cv06` able to influence `U+0191` (#1038).
diff --git a/font-src/glyphs/letter/latin/upper-f.ptl b/font-src/glyphs/letter/latin/upper-f.ptl
index 3d62708d9..818bd6238 100644
--- a/font-src/glyphs/letter/latin/upper-f.ptl
+++ b/font-src/glyphs/letter/latin/upper-f.ptl
@@ -85,7 +85,8 @@ glyph-block Letter-Latin-Upper-F : begin
 		include : refer-glyph "F"
 		include : HOverlayBar (SB * 0.5) (SB * 3 + Stroke * HVContrast) [mix 0 XH 0.4]
 
-	create-glyph 'Fltail' 0x191 : glyph-proc
-		include [refer-glyph 'F'] AS_BASE
+	derive-glyphs 'Fltail' 0x191 'F' : lambda [src sel] : glyph-proc
+		include [refer-glyph src] AS_BASE ALSO_METRICS
+		include : MarkSet.if
 		eject-contour 'serifBottom'
-		include : VerticalHook (SB * 1.5 + HalfStroke * HVContrast) 0 (-HookX) Hook
\ No newline at end of file
+		include : VerticalHook (SB * 1.5 + HalfStroke * HVContrast) 0 (-HookX) Hook