diff --git a/qdox.spec b/qdox.spec
index 237c5ac..ad0f4d4 100644
--- a/qdox.spec
+++ b/qdox.spec
@@ -54,6 +54,10 @@ rm -rf bootstrap
 
 %pom_xpath_set pom:workingDirectory '${basedir}/src/main/java/com/thoughtworks/qdox/parser/impl'
 
+# Compatibility with JFlex 1.7.0
+sed -i 's/JFlexLexer(\(.*\))/JFlexLexer(new java.io.InputStreamReader((\1), java.nio.charset.Charset.forName("UTF-8")))/' \
+    src/main/java/com/thoughtworks/qdox/library/ClassLoaderLibrary.java
+
 %build
 # Generate scanners (upstream does this with maven-jflex-plugin)
 jflex -d src/main/java/com/thoughtworks/qdox/parser/impl src/grammar/lexer.flex