diff --git a/classes/java-library.bbclass b/classes/java-library.bbclass
index 67541d2..033d6d4 100644
--- a/classes/java-library.bbclass
+++ b/classes/java-library.bbclass
@@ -55,10 +55,9 @@ ALTJARFILENAMES = "${BPN}.jar"
 # Java "source" distributions often contain precompiled things
 # we want to delete first.
 do_deletebinaries() {
-  find ${WORKDIR} ! -path "${RECIPE_SYSROOT}/*" ! -path "${RECIPE_SYSROOT_NATIVE}/*" \
-                  -name "*.jar" -exec rm {} \;
-  find ${WORKDIR} ! -path "${RECIPE_SYSROOT}/*" ! -path "${RECIPE_SYSROOT_NATIVE}/*" \
-                  -name "*.class" -exec rm {} \;
+  dirs_to_search="$(find ${WORKDIR}/* -maxdepth 0 -type d | grep -Ev "recipe-sysroot|sstate|spdx")"
+  find $dirs_to_search -name "*.jar" -exec rm {} \;
+  find $dirs_to_search -name "*.class" -exec rm {} \;
 }
 
 addtask deletebinaries after do_unpack before do_patch