diff --git a/phino.cabal b/phino.cabal
--- a/phino.cabal
+++ b/phino.cabal
@@ -1,6 +1,6 @@
 cabal-version: 3.0
 name: phino
-version: 0.0.103
+version: 0.0.104
 license: MIT
 synopsis: Command-Line Manipulator of 𝜑-Calculus Expressions
 description: Please see the README on GitHub at <https://github.com/objectionary/phino#readme>
diff --git a/src/Margin.hs b/src/Margin.hs
--- a/src/Margin.hs
+++ b/src/Margin.hs
@@ -31,7 +31,7 @@
   withMargin' _ str@EX_STRING{} = str
   withMargin' cfg EX_DISPATCH{..} = EX_DISPATCH (withMargin' cfg expr) space attr
   withMargin' cfg EX_PHI_AGAIN{..} = EX_PHI_AGAIN prefix idx (withMargin' cfg expr)
-  withMargin' cfg EX_PHI_MEET{..} = EX_PHI_MEET prefix idx (withMargin' cfg expr)
+  withMargin' _ EX_PHI_MEET{..} = EX_PHI_MEET prefix idx (toSingleLine expr)
   withMargin' cfg@(extra, margin) ex@EX_APPLICATION{tab = tab@(TAB indt), ..} =
     let single = toSingleLine ex
         main = withMargin' cfg expr
diff --git a/test/PrinterSpec.hs b/test/PrinterSpec.hs
--- a/test/PrinterSpec.hs
+++ b/test/PrinterSpec.hs
@@ -80,6 +80,17 @@
             parseExpression printed `shouldBe` Right expr
       )
 
+  describe "printExpression keeps a compressed meet atomic under a narrow margin" $
+    -- A \phinoMeet is a single \overbracket visual unit, so its body must stay
+    -- on one line even when the surrounding margin forces the outer formation to
+    -- wrap. A newline inside the braced argument would raise "! Missing }
+    -- inserted" in an aligned/gathered LaTeX context (see #978).
+    it "renders the meet body on a single line even when the margin wraps its parent" $ do
+      let body = ExFormation [BiTau (AtLabel "alpha") ExRoot, BiTau (AtLabel "beta") ExRoot, BiTau (AtLabel "gamma") ExRoot]
+          expr = ExFormation [BiTau (AtLabel "x") (ExPhiMeet Nothing 5 body)]
+          printed = printExpression' expr (SWEET, UNICODE, MULTILINE, 30)
+      printed `shouldContain` "\\phinoMeet{5}{ ⟦ alpha ↦ Φ, beta ↦ Φ, gamma ↦ Φ ⟧ }"
+
   describe "printExpression with default config" $
     forM_
       [ ("empty formation", ExFormation [BiVoid AtRho], "⟦⟧")