diff --git a/projects/php/Dockerfile b/projects/php/Dockerfile
index 1464cb8f0..f6ff42555 100644
--- a/projects/php/Dockerfile
+++ b/projects/php/Dockerfile
@@ -17,10 +17,11 @@
 FROM gcr.io/oss-fuzz-base/base-builder
 MAINTAINER stas@php.net
 RUN apt-get update && apt-get install -y make autoconf automake libtool bison re2c make ca-certificates curl \
-	xz-utils dpkg-dev file libc-dev pkg-config libcurl4-openssl-dev libedit-dev libsqlite3-dev libssl-dev zlib1g-dev
+	xz-utils dpkg-dev file libc-dev pkg-config libcurl4-openssl-dev libedit-dev libsqlite3-dev libssl-dev \
+	zlib1g-dev libonig-dev chrpath
 RUN git clone --depth 1 --branch master https://github.com/php/php-src.git php-src
 RUN git clone --depth 1 https://github.com/smalyshev/php-fuzzing-sapi.git php-src/sapi/fuzzer
 WORKDIR php-src
-COPY build.sh $SRC/
+COPY build.sh *.options $SRC/
 # This ideally will be gone eventually, right now used for more flexibility in tweaking Makefile options
 # COPY Makefile.frag $SRC/php-src/sapi/fuzzer
diff --git a/projects/php/build.sh b/projects/php/build.sh
index 4facef4fe..9b6dadd5a 100755
--- a/projects/php/build.sh
+++ b/projects/php/build.sh
@@ -15,15 +15,26 @@
 #
 ################################################################################
 
+mkdir -p $OUT/lib/
+cp sapi/fuzzer/json.dict $OUT/php-fuzz-json.dict
+cp /usr/lib/x86_64-linux-gnu/libonig.so.2 $OUT/lib/
 # build project
 ./buildconf
 ./configure --enable-fuzzer --enable-option-checking=fatal --disable-libxml --disable-dom \
 	--disable-simplexml --disable-xml --disable-xmlreader --disable-xmlwriter --without-pear \
-	--enable-exif --disable-phpdbg --disable-cgi
+	--enable-exif --disable-phpdbg --disable-cgi --enable-mbstring
 make
-cp sapi/fuzzer/json.dict $OUT/php-fuzz-json.dict
-cp sapi/fuzzer/php-fuzz-json $OUT/
-cp sapi/fuzzer/php-fuzz-exif $OUT/
+
+FUZZERS="php-fuzz-json php-fuzz-exif php-fuzz-mbstring"
+for fuzzerName in $FUZZERS; do
+	cp sapi/fuzzer/$fuzzerName $OUT/
+	# for loading missing libs like libonig
+	chrpath -r '$ORIGIN/lib' $OUT/$fuzzerName
+	# copy runtime options
+	cp $SRC/runtime.options $OUT/${fuzzerName}.options
+done
+# copy corpora from source
 for fuzzerName in `ls sapi/fuzzer/corpus`; do
 	zip -j $OUT/php-fuzz-${fuzzerName}_seed_corpus.zip sapi/fuzzer/corpus/${fuzzerName}/*
 done
+
diff --git a/projects/php/runtime.options b/projects/php/runtime.options
new file mode 100644
index 000000000..e6ad1448a
--- /dev/null
+++ b/projects/php/runtime.options
@@ -0,0 +1,2 @@
+[libfuzzer]
+detect_leaks=0
\ No newline at end of file