diff --git a/ecj.spec b/ecj.spec
index ed958ed..47714a5 100644
--- a/ecj.spec
+++ b/ecj.spec
@@ -82,10 +82,10 @@ rm -f java10api-src/javax/tools/ToolProvider.java
 
 mkdir -p build/classes
 javac -d build/classes -source 8 -target 8 \
-  $(find java10api/javax -name \*.java | xargs)
+  $(find java10api-src/javax -name \*.java | xargs)
 jar -cf java10api.jar -C build/classes .
 # Remove everything except the jar, since ant looks for java files in "."
-rm -rf java10api build/classes
+rm -rf java10api-src build/classes
 
 ant \
 %if %{?pkg_vcmp:%pkg_vcmp java-devel < 9}%{!?pkg_vcmp:1}