diff --git a/build-fuzz-corpus-multiple-restarts.sh b/build-fuzz-corpus-multiple-restarts.sh
index 88ae63d8..d15656a0 100755
--- a/build-fuzz-corpus-multiple-restarts.sh
+++ b/build-fuzz-corpus-multiple-restarts.sh
@@ -17,4 +17,4 @@ for i in $(seq 1 $RESTARTS); do
   mv "fuzz/corpus/fuzz_$1_restart_${i}"/* "fuzz/corpus/fuzz_$1"
   rmdir "fuzz/corpus/fuzz_$1_restart_${i}"
 done
-./fuzz-until-converged.sh $1 $2
+./fuzz-until-converged.sh "$1" "$2"
diff --git a/build-fuzz-corpus-multiple-sizes.sh b/build-fuzz-corpus-multiple-sizes.sh
new file mode 100755
index 00000000..658f771b
--- /dev/null
+++ b/build-fuzz-corpus-multiple-sizes.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+mkdir "fuzz/corpus/fuzz_$1_recombination_sources" || true
+mv "fuzz/corpus/fuzz_$1/*" "fuzz/corpus/fuzz_$1_recombination_sources"
+for size in "${@:2}"; do
+  rm -rf "fuzz/corpus/fuzz_$1_pre_fresh_blood"
+  ./build-fuzz-corpus-multiple-restarts.sh "$1" "$size"
+  find "fuzz/corpus/fuzz_$1_pre_fresh_blood" -type -f -size "-${size}c" -exec mv '{}' "fuzz/corpus/fuzz_$1" ';'
+  find "fuzz/corpus/fuzz_$1_recombination_sources" -type -f -size "-${size}c" -exec mv '{}' "fuzz/corpus/fuzz_$1" ';'
+  ./fuzz-until-converged.sh "$1" "$size"
+done
\ No newline at end of file