diff --git a/fuzzers/libfuzzer_libmozjpeg/build.rs b/fuzzers/libfuzzer_libmozjpeg/build.rs
index a3ced5b2bb..e71dafcc01 100644
--- a/fuzzers/libfuzzer_libmozjpeg/build.rs
+++ b/fuzzers/libfuzzer_libmozjpeg/build.rs
@@ -48,16 +48,13 @@ fn main() {
             .arg(&libmozjpeg_tar)
             .status()
             .unwrap();
-        Command::new(format!("{}/cmake", &libmozjpeg))
-            .current_dir(&out_dir_path)
-            .args(&[
-                "-G\"Unix Makefiles\"",
-                "--disable-shared",
-                &libmozjpeg,
-                "CC=clang",
-                "CFLAGS=-O3 -g -D_DEFAULT_SOURCE -fPIE -fsanitize-coverage=trace-pc-guard",
-                "LDFLAGS=-g -fPIE -fsanitize-coverage=trace-pc-guard",
-            ])
+        //println!("cargo:warning=Running cmake on {}", &libmozjpeg);
+
+        Command::new("cmake")
+            .current_dir(&libmozjpeg_path)
+            .args(&["-G", "Unix Makefiles", "--disable-shared"])
+            .arg(&libmozjpeg)
+            .env("OPT_LEVEL", "3")
             .env("CC", "clang")
             .env("CXX", "clang++")
             .env(
@@ -68,13 +65,17 @@ fn main() {
                 "CXXFLAGS",
                 "-O3 -g -D_DEFAULT_SOURCE -fPIE -fsanitize-coverage=trace-pc-guard",
             )
-            .env("LDFLAGS", "-g -fPIE -fsanitize-coverage=trace-pc-guard");
+            .env("LDFLAGS", "-g -fPIE -fsanitize-coverage=trace-pc-guard")
+            .status()
+            .unwrap();
+
         Command::new("make")
             .current_dir(&libmozjpeg_path)
             //.arg(&format!("-j{}", num_cpus::get()))
             .args(&[
                 "CC=clang",
                 "CXX=clang++",
+                "OPT_LEVEL=3",
                 "CFLAGS=-O3 -g -D_DEFAULT_SOURCE -fPIE -fsanitize-coverage=trace-pc-guard",
                 "LDFLAGS=-g -fPIE -fsanitize-coverage=trace-pc-guard",
                 "CXXFLAGS=-D_DEFAULT_SOURCE -fPIE -fsanitize-coverage=trace-pc-guard",
diff --git a/fuzzers/libfuzzer_libmozjpeg/src/fuzzer.rs b/fuzzers/libfuzzer_libmozjpeg/src/fuzzer.rs
index cafe05bc1b..4634c7fd31 100644
--- a/fuzzers/libfuzzer_libmozjpeg/src/fuzzer.rs
+++ b/fuzzers/libfuzzer_libmozjpeg/src/fuzzer.rs
@@ -8,10 +8,9 @@ use libafl::{
     bolts::{shmem::UnixShMem, tuples::tuple_list},
     corpus::{Corpus, InMemoryCorpus, OnDiskCorpus, RandCorpusScheduler},
     events::setup_restarting_mgr,
-    executors::{inprocess::InProcessExecutor, Executor, ExitKind},
+    executors::{inprocess::InProcessExecutor, ExitKind},
     feedbacks::{CrashFeedback, MaxMapFeedback},
     fuzzer::{Fuzzer, HasCorpusScheduler, StdFuzzer},
-    inputs::Input,
     mutators::scheduled::HavocBytesMutator,
     mutators::token_mutations::Tokens,
     observers::StdMapObserver,