diff --git a/bake/hcl_test.go b/bake/hcl_test.go
index dedde357..005b4785 100644
--- a/bake/hcl_test.go
+++ b/bake/hcl_test.go
@@ -634,6 +634,29 @@ func TestHCLMultiFileAttrs(t *testing.T) {
 	require.Equal(t, ptrstr("pre-ghi"), c.Targets[0].Args["v1"])
 }
 
+func TestHCLMultiFileGlobalAttrs(t *testing.T) {
+	dt := []byte(`
+		FOO = "abc"
+		target "app" {
+			args = {
+				v1 = "pre-${FOO}"
+			}
+		}
+		`)
+	dt2 := []byte(`
+		FOO = "def"
+		`)
+
+	c, err := ParseFiles([]File{
+		{Data: dt, Name: "c1.hcl"},
+		{Data: dt2, Name: "c2.hcl"},
+	}, nil)
+	require.NoError(t, err)
+	require.Equal(t, 1, len(c.Targets))
+	require.Equal(t, c.Targets[0].Name, "app")
+	require.Equal(t, "pre-def", *c.Targets[0].Args["v1"])
+}
+
 func TestHCLDuplicateTarget(t *testing.T) {
 	dt := []byte(`
 		target "app" {
diff --git a/bake/hclparser/hclparser.go b/bake/hclparser/hclparser.go
index d7461cd7..7efdc9f6 100644
--- a/bake/hclparser/hclparser.go
+++ b/bake/hclparser/hclparser.go
@@ -613,7 +613,7 @@ func Parse(b hcl.Body, opt Opt, val interface{}) (map[string]map[string][]string
 
 	attrs, diags := b.JustAttributes()
 	if diags.HasErrors() {
-		if d := removeAttributesDiags(diags, reserved, p.vars); len(d) > 0 {
+		if d := removeAttributesDiags(diags, reserved, p.vars, attrs); len(d) > 0 {
 			return nil, d
 		}
 	}
@@ -857,7 +857,7 @@ func getNameIndex(v reflect.Value) (int, bool) {
 	return 0, false
 }
 
-func removeAttributesDiags(diags hcl.Diagnostics, reserved map[string]struct{}, vars map[string]*variable) hcl.Diagnostics {
+func removeAttributesDiags(diags hcl.Diagnostics, reserved map[string]struct{}, vars map[string]*variable, attrs hcl.Attributes) hcl.Diagnostics {
 	var fdiags hcl.Diagnostics
 	for _, d := range diags {
 		if fout := func(d *hcl.Diagnostic) bool {
@@ -879,6 +879,12 @@ func removeAttributesDiags(diags hcl.Diagnostics, reserved map[string]struct{},
 					return true
 				}
 			}
+			for a := range attrs {
+				// Do the same for attributes
+				if strings.HasPrefix(d.Detail, fmt.Sprintf(`Argument "%s" was already set at `, a)) {
+					return true
+				}
+			}
 			return false
 		}(d); !fout {
 			fdiags = append(fdiags, d)
diff --git a/bake/hclparser/merged.go b/bake/hclparser/merged.go
index cc3f2b2b..d53c788b 100644
--- a/bake/hclparser/merged.go
+++ b/bake/hclparser/merged.go
@@ -123,9 +123,7 @@ func (mb mergedBodies) JustAttributes() (hcl.Attributes, hcl.Diagnostics) {
 						),
 						Subject: &attr.NameRange,
 					})
-					continue
 				}
-
 				attrs[name] = attr
 			}
 		}
@@ -196,7 +194,6 @@ func (mb mergedBodies) mergedContent(schema *hcl.BodySchema, partial bool) (*hcl
 						),
 						Subject: &attr.NameRange,
 					})
-					continue
 				}
 				content.Attributes[name] = attr
 			}