diff --git a/src/visitors/removeUnnecessaryCalls.js b/src/visitors/removeUnnecessaryCalls.js
index 98249fc..b9176ba 100644
--- a/src/visitors/removeUnnecessaryCalls.js
+++ b/src/visitors/removeUnnecessaryCalls.js
@@ -41,13 +41,33 @@ const visitor = {
     }
 
     function isSafeConditional(node) {
-      return (
-        t.isConditionalExpression(node) &&
-        t.isStringLiteral(node.consequent) &&
-        t.isStringLiteral(node.alternate) &&
-        node.consequent.value.length > 0 &&
-        node.alternate.value.length > 0
-      );
+      if (!t.isConditionalExpression(node)) {
+        return false;
+      }
+
+      const { consequent, alternate } = node;
+
+      if (
+        t.isStringLiteral(consequent) &&
+        t.isStringLiteral(alternate) &&
+        consequent.value.length > 0 &&
+        alternate.value.length > 0
+      ) {
+        return true;
+      }
+
+      if (
+        (t.isStringLiteral(consequent) &&
+          consequent.value.length > 0 &&
+          isSafeConditional(alternate)) ||
+        (t.isStringLiteral(alternate) &&
+          alternate.value.length > 0 &&
+          isSafeConditional(consequent))
+      ) {
+        return true;
+      }
+
+      return false;
     }
   },
 };
diff --git a/test/fixtures/remove-unnecessary-calls/nested-conditional/code.js b/test/fixtures/remove-unnecessary-calls/nested-conditional/code.js
new file mode 100644
index 0000000..e743607
--- /dev/null
+++ b/test/fixtures/remove-unnecessary-calls/nested-conditional/code.js
@@ -0,0 +1,8 @@
+const x = clsx({
+  foo1: true,
+  foo2: foo,
+  foo3: foo,
+  foo4: !foo && !bar,
+  foo5: !foo && bar,
+  foo6: true,
+});
diff --git a/test/fixtures/remove-unnecessary-calls/nested-conditional/output.js b/test/fixtures/remove-unnecessary-calls/nested-conditional/output.js
new file mode 100644
index 0000000..a134a22
--- /dev/null
+++ b/test/fixtures/remove-unnecessary-calls/nested-conditional/output.js
@@ -0,0 +1 @@
+const x = 'foo1 foo6 ' + (foo ? 'foo2 foo3' : bar ? 'foo5' : 'foo4');