diff --git a/projects/boringssl/build.sh b/projects/boringssl/build.sh
index cb5eaa238..b52431359 100755
--- a/projects/boringssl/build.sh
+++ b/projects/boringssl/build.sh
@@ -61,6 +61,7 @@ if [[ $CFLAGS != *sanitize=memory* ]]; then
     fuzzerName=$(basename $fuzzerName .cc)
     echo "Building fuzzer $fuzzerName"
     $CXX $CXXFLAGS -I genfiles -I . -I $SRC/libprotobuf-mutator/ -I $SRC/LPM/external.protobuf/include -I include $LIB_FUZZING_ENGINE \
+        -DNDEBUG \
         -I $SRC/boringssl/include \
         $F genfiles/asn1_pdu.pb.cc $SRC/asn1_pdu_to_der.cc $SRC/common.cc \
         ./ssl/libssl.a ./crypto/libcrypto.a \
diff --git a/projects/giflib/build.sh b/projects/giflib/build.sh
index 97b967e98..b5d9a0413 100755
--- a/projects/giflib/build.sh
+++ b/projects/giflib/build.sh
@@ -1,3 +1,19 @@
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+
 set -e
 SOURCES=(dgif_lib.c egif_lib.c getarg.c gifalloc.c gif_err.c gif_font.c \
         gif_hash.c openbsd-reallocarray.c qprintf.c quantize.c)
@@ -21,12 +37,12 @@ $CXX $CXXFLAGS $LIB_FUZZING_ENGINE -std=c++11  -I giflib-code egif_fuzz_common.c
 
 rm -rf genfiles && mkdir genfiles && LPM/external.protobuf/bin/protoc gif_fuzz_proto.proto --cpp_out=genfiles
 
-$CXX $CXXFLAGS -Wall -c -I giflib-code dgif_protobuf_target.cc -I libprotobuf-mutator/ \
+$CXX $CXXFLAGS -DNDEBUG -Wall -c -I giflib-code dgif_protobuf_target.cc -I libprotobuf-mutator/ \
 -I genfiles \
 -I LPM/external.protobuf/include \
  -o dgif_protobuf_target.o
 
-$CXX $CXXFLAGS $LIB_FUZZING_ENGINE -std=c++11 -I. -I giflib-code dgif_protobuf_target.o dgif_fuzz_common.cc genfiles/gif_fuzz_proto.pb.cc \
+$CXX $CXXFLAGS $LIB_FUZZING_ENGINE -DNDEBUG -std=c++11 -I. -I giflib-code dgif_protobuf_target.o dgif_fuzz_common.cc genfiles/gif_fuzz_proto.pb.cc \
 ProtoToGif.cpp \
 -I LPM/external.protobuf/include \
 -I genfiles \
diff --git a/projects/jsoncpp/build.sh b/projects/jsoncpp/build.sh
index 739dcd8ba..6aee34f82 100644
--- a/projects/jsoncpp/build.sh
+++ b/projects/jsoncpp/build.sh
@@ -34,11 +34,11 @@ if [[ $CFLAGS != *sanitize=memory* ]]; then
 rm -rf genfiles && mkdir genfiles && ../LPM/external.protobuf/bin/protoc json.proto --cpp_out=genfiles --proto_path=$SRC
 
 # Compile LPM fuzzer.
-$CXX $CXXFLAGS -I genfiles -I .. -I ../libprotobuf-mutator/ -I ../LPM/external.protobuf/include -I ../include $LIB_FUZZING_ENGINE \
+$CXX $CXXFLAGS -DNDEBUG -I genfiles -I .. -I ../libprotobuf-mutator/ -I ../LPM/external.protobuf/include -I ../include $LIB_FUZZING_ENGINE \
     $SRC/jsoncpp_fuzz_proto.cc genfiles/json.pb.cc $SRC/json_proto_converter.cc \
     ../LPM/src/libfuzzer/libprotobuf-mutator-libfuzzer.a \
     ../LPM/src/libprotobuf-mutator.a \
     ../LPM/external.protobuf/lib/libprotobuf.a \
     -o  $OUT/jsoncpp_proto_fuzzer \
     lib/libjsoncpp.a
-fi
\ No newline at end of file
+fi
diff --git a/projects/libpng-proto/build.sh b/projects/libpng-proto/build.sh
index b51c9f9b8..75984f57b 100755
--- a/projects/libpng-proto/build.sh
+++ b/projects/libpng-proto/build.sh
@@ -32,7 +32,7 @@ rm -rf genfiles && mkdir genfiles && LPM/external.protobuf/bin/protoc png_fuzz_p
 $CXX $CXXFLAGS -c -DLLVMFuzzerTestOneInput=FuzzPNG libpng/contrib/oss-fuzz/libpng_read_fuzzer.cc -I libpng
 
 # compile & link the rest
-$CXX $CXXFLAGS png_proto_fuzzer_example.cc libpng_read_fuzzer.o genfiles/png_fuzz_proto.pb.cc \
+$CXX $CXXFLAGS -DNDEBUG png_proto_fuzzer_example.cc libpng_read_fuzzer.o genfiles/png_fuzz_proto.pb.cc \
   -I genfiles -I.  -I libprotobuf-mutator/  -I LPM/external.protobuf/include \
   -lz \
   LPM/src/libfuzzer/libprotobuf-mutator-libfuzzer.a \
@@ -43,7 +43,7 @@ $CXX $CXXFLAGS png_proto_fuzzer_example.cc libpng_read_fuzzer.o genfiles/png_fuz
   -o $OUT/png_proto_fuzzer_example
 
 # custom png proto mutator
-$CXX $CXXFLAGS png_proto_fuzzer_example.cc png_proto_mutator.cc libpng_read_fuzzer.o genfiles/png_fuzz_proto.pb.cc \
+$CXX $CXXFLAGS -DNDEBUG png_proto_fuzzer_example.cc png_proto_mutator.cc libpng_read_fuzzer.o genfiles/png_fuzz_proto.pb.cc \
   -I genfiles -I.  -I libprotobuf-mutator/  -I LPM/external.protobuf/include \
   -lz \
   LPM/src/libfuzzer/libprotobuf-mutator-libfuzzer.a \
diff --git a/projects/nginx/make_fuzzers b/projects/nginx/make_fuzzers
index a62d4d6ec..37427ae90 100644
--- a/projects/nginx/make_fuzzers
+++ b/projects/nginx/make_fuzzers
@@ -22,7 +22,7 @@ objs/src/fuzz/wrappers.o:
 	\$(CC) $ngx_compile_opt \$(CFLAGS) -o objs/src/fuzz/wrappers.o src/fuzz/wrappers.c
 
 objs/http_request_fuzzer: $ngx_deps_fuzz
-	 \$(CXX) \$(CXXFLAGS) src/fuzz/http_request_fuzzer.cc \
+	 \$(CXX) \$(CXXFLAGS) -DNDEBUG src/fuzz/http_request_fuzzer.cc \
 	 src/fuzz/genfiles/http_request_proto.pb.cc \
 	 -o objs/http_request_fuzzer \
 	 \$(CORE_INCS) \$(HTTP_INCS) \
diff --git a/projects/xerces-c/build.sh b/projects/xerces-c/build.sh
index 992fc3f58..a3740d442 100755
--- a/projects/xerces-c/build.sh
+++ b/projects/xerces-c/build.sh
@@ -28,7 +28,7 @@ $CXX $CXXFLAGS $LIB_FUZZING_ENGINE -std=c++11 \
 if [[ $CFLAGS != *sanitize=memory* ]]; then
 	rm -rf genfiles && mkdir genfiles && LPM/external.protobuf/bin/protoc xml.proto --cpp_out=genfiles
 
-	$CXX $CXXFLAGS $LIB_FUZZING_ENGINE -std=c++11 \
+	$CXX $CXXFLAGS $LIB_FUZZING_ENGINE -DNDEBUG -std=c++11 \
 	        -I. -I xerces-c/src -Ixerces-c/build/src genfiles/xml.pb.cc xmlProtoConverter.cpp xerces_fuzz_common.cpp parse_target_proto.cpp \
 	        -I libprotobuf-mutator/ \
 	        -I genfiles \