diff --git a/docs/release-notes/.FSharp.Compiler.Service/9.0.100.md b/docs/release-notes/.FSharp.Compiler.Service/9.0.100.md
index 99c251d76c2..b681c475043 100644
--- a/docs/release-notes/.FSharp.Compiler.Service/9.0.100.md
+++ b/docs/release-notes/.FSharp.Compiler.Service/9.0.100.md
@@ -5,6 +5,7 @@
 * Optimize simple mappings in comprehensions when the body of the mapping has `let`-bindings and/or sequential expressions before a single yield. ([PR #17419](https://github.com/dotnet/fsharp/pull/17419))
 * C# protected property can be assigned in F# inherit constructor call. ([Issue #13299](https://github.com/dotnet/fsharp/issues/13299), [PR #17391](https://github.com/dotnet/fsharp/pull/17391))
 * MethodAccessException on equality comparison of a record with private fields. ([Issue #17447](https://github.com/dotnet/fsharp/issues/17447), [PR #17391](https://github.com/dotnet/fsharp/pull/17467))
+* Compiler fails to recognise namespace in FQN with enabled GraphBasedChecking. ([Issue #17508](https://github.com/dotnet/fsharp/issues/17508), [PR #17510](https://github.com/dotnet/fsharp/pull/17510))
 
 ### Added
 
diff --git a/src/Compiler/Driver/GraphChecking/FileContentMapping.fs b/src/Compiler/Driver/GraphChecking/FileContentMapping.fs
index 271e927933a..13ee0c312f9 100644
--- a/src/Compiler/Driver/GraphChecking/FileContentMapping.fs
+++ b/src/Compiler/Driver/GraphChecking/FileContentMapping.fs
@@ -598,7 +598,7 @@ let visitPat (p: SynPat) : FileContentEntry list =
         match p with
         | NameofPat moduleNameIdent -> continuation [ visitNameofResult moduleNameIdent ]
         | SynPat.Paren(pat = pat) -> visit pat continuation
-        | SynPat.Typed(pat = pat; targetType = t) -> visit pat (fun nodes -> nodes @ visitSynType t)
+        | SynPat.Typed(pat = pat; targetType = t) -> visit pat (fun nodes -> nodes @ visitSynType t |> continuation)
         | SynPat.Const _ -> continuation []
         | SynPat.Wild _ -> continuation []
         | SynPat.Named _ -> continuation []
diff --git a/tests/FSharp.Compiler.ComponentTests/TypeChecks/Graph/Scenarios.fs b/tests/FSharp.Compiler.ComponentTests/TypeChecks/Graph/Scenarios.fs
index 6bd170a9dbf..fe0c270edc5 100644
--- a/tests/FSharp.Compiler.ComponentTests/TypeChecks/Graph/Scenarios.fs
+++ b/tests/FSharp.Compiler.ComponentTests/TypeChecks/Graph/Scenarios.fs
@@ -1022,4 +1022,24 @@ module Program =
 """
                     (set [| 0 |])
         ]
+        scenario
+            "fully qualified type in tuple constructor pattern"
+            [
+                sourceFile
+                    "A.fs"
+                    """
+namespace MyRootNamespace.A
+
+type Foo() = class end
+"""
+                    Set.empty
+                sourceFile
+                    "B.fs"
+                    """
+namespace MyRootNamespace.A.B
+
+type Bar(foo: MyRootNamespace.A.Foo, s: string) = class end
+"""
+                    (set [| 0 |])
+            ]
     ]
\ No newline at end of file