diff --git a/crates/ruff/resources/test/fixtures/flake8_comprehensions/C402.py b/crates/ruff/resources/test/fixtures/flake8_comprehensions/C402.py
index 736bdaff0c..56a1f6cfc8 100644
--- a/crates/ruff/resources/test/fixtures/flake8_comprehensions/C402.py
+++ b/crates/ruff/resources/test/fixtures/flake8_comprehensions/C402.py
@@ -16,3 +16,6 @@ def f(x):
     return x
 
 print(f'Hello {dict((x,f(x)) for x in "abc")} World')
+
+# Regression test for: https://github.com/astral-sh/ruff/issues/7086
+dict((k,v)for k,v in d.iteritems() if k in only_args)
diff --git a/crates/ruff/src/rules/flake8_comprehensions/fixes.rs b/crates/ruff/src/rules/flake8_comprehensions/fixes.rs
index d895f339d0..ce972cdc2e 100644
--- a/crates/ruff/src/rules/flake8_comprehensions/fixes.rs
+++ b/crates/ruff/src/rules/flake8_comprehensions/fixes.rs
@@ -110,10 +110,20 @@ pub(crate) fn fix_unnecessary_generator_dict(checker: &Checker, expr: &Expr) ->
         bail!("Expected tuple to contain two elements");
     };
 
+    // Insert whitespace before the `for`, since we're removing parentheses, as in:
+    // ```python
+    // dict((x, x)for x in range(3))
+    // ```
+    let mut for_in = generator_exp.for_in.clone();
+    if for_in.whitespace_before == ParenthesizableWhitespace::default() {
+        for_in.whitespace_before =
+            ParenthesizableWhitespace::SimpleWhitespace(SimpleWhitespace(" "));
+    }
+
     tree = Expression::DictComp(Box::new(DictComp {
         key: Box::new(key.clone()),
         value: Box::new(value.clone()),
-        for_in: generator_exp.for_in.clone(),
+        for_in,
         lbrace: LeftCurlyBrace {
             whitespace_after: call.whitespace_before_args.clone(),
         },
diff --git a/crates/ruff/src/rules/flake8_comprehensions/snapshots/ruff__rules__flake8_comprehensions__tests__C402_C402.py.snap b/crates/ruff/src/rules/flake8_comprehensions/snapshots/ruff__rules__flake8_comprehensions__tests__C402_C402.py.snap
index a0733820e6..8fe86d0663 100644
--- a/crates/ruff/src/rules/flake8_comprehensions/snapshots/ruff__rules__flake8_comprehensions__tests__C402_C402.py.snap
+++ b/crates/ruff/src/rules/flake8_comprehensions/snapshots/ruff__rules__flake8_comprehensions__tests__C402_C402.py.snap
@@ -231,6 +231,8 @@ C402.py:18:16: C402 [*] Unnecessary generator (rewrite as a `dict` comprehension
 17 | 
 18 | print(f'Hello {dict((x,f(x)) for x in "abc")} World')
    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ C402
+19 | 
+20 | # Regression test for: https://github.com/astral-sh/ruff/issues/7086
    |
    = help: Rewrite as a `dict` comprehension
 
@@ -240,5 +242,23 @@ C402.py:18:16: C402 [*] Unnecessary generator (rewrite as a `dict` comprehension
 17 17 | 
 18    |-print(f'Hello {dict((x,f(x)) for x in "abc")} World')
    18 |+print(f'Hello { {x: f(x) for x in "abc"} } World')
+19 19 | 
+20 20 | # Regression test for: https://github.com/astral-sh/ruff/issues/7086
+21 21 | dict((k,v)for k,v in d.iteritems() if k in only_args)
+
+C402.py:21:1: C402 [*] Unnecessary generator (rewrite as a `dict` comprehension)
+   |
+20 | # Regression test for: https://github.com/astral-sh/ruff/issues/7086
+21 | dict((k,v)for k,v in d.iteritems() if k in only_args)
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ C402
+   |
+   = help: Rewrite as a `dict` comprehension
+
+ℹ Suggested fix
+18 18 | print(f'Hello {dict((x,f(x)) for x in "abc")} World')
+19 19 | 
+20 20 | # Regression test for: https://github.com/astral-sh/ruff/issues/7086
+21    |-dict((k,v)for k,v in d.iteritems() if k in only_args)
+   21 |+{k: v for k,v in d.iteritems() if k in only_args}