diff --git a/src/server.ts b/src/server.ts
index c934d5e6d00039ef7b3389307d370b0378e60163..306a5155939aa309738fc3375d3b73fd93e0868a 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -411,7 +411,7 @@       if (semver.gte(tailwindcssVersion, '1.99.0')) {
         applyComplexClasses = __non_webpack_require__(
           resolveFrom(tailwindDir, './lib/lib/substituteClassApplyAtRules')
         )
-      } else {
+      } else if (semver.gte(tailwindcssVersion, '1.7.0')) {
         applyComplexClasses = __non_webpack_require__(
           resolveFrom(tailwindDir, './lib/flagged/applyComplexClasses')
         )
@@ -463,7 +463,7 @@     state.browserslist = browserslist
     state.featureFlags = featureFlags
     state.version = tailwindcssVersion
 
-    if (semver.gte(tailwindcssVersion, '1.7.0') && !applyComplexClasses.default.__patched) {
+    if (applyComplexClasses && !applyComplexClasses.default.__patched) {
       let _applyComplexClasses = applyComplexClasses.default
       applyComplexClasses.default = (config, ...args) => {
         let configClone = klona(config)