diff --git a/Makefile.frag b/Makefile.frag
index afb6113..0d406c7 100644
--- a/Makefile.frag
+++ b/Makefile.frag
@@ -1,7 +1,6 @@
 
 INT_DIR=build/install
 GENERATE_STUBS=$(shell expr `php --version | head -1 | cut -f 2 -d' '` \>= 7.1)
-HAS_FFI=$(shell php -m | grep FFI | wc -l | xargs)
 
 CMAKE = cmake3
 ifeq (, $(shell which cmake3))
@@ -48,37 +47,11 @@ ext/api.h : src/api.h
 
 ext/php_aws_crt.h: ext/awscrt_arginfo.h ext/api.h
 
-# FFI target
-ffi: src/api.h src/libaws-crt-ffi.$(SHLIB_SUFFIX_NAME)
-
-# configure for shared aws-crt-ffi.so
-build/aws-crt-ffi-shared/CMakeCache.txt:
-ifeq ($(HAS_FFI),1)
-	$(CMAKE_CONFIGURE) -Hcrt/aws-crt-ffi -Bbuild/aws-crt-ffi-shared -DBUILD_SHARED_LIBS=ON
-endif
-
-# build shared libaws-crt-ffi.so
-build/aws-crt-ffi-shared/libaws-crt-ffi.$(SHLIB_SUFFIX_NAME): build/aws-crt-ffi-shared/CMakeCache.txt
-ifeq ($(HAS_FFI),1)
-	$(CMAKE_BUILD) build/aws-crt-ffi-shared $(CMAKE_TARGET)
-endif
-
-# copy the lib into the src folder
-src/libaws-crt-ffi.$(SHLIB_SUFFIX_NAME): build/aws-crt-ffi-shared/libaws-crt-ffi.$(SHLIB_SUFFIX_NAME) src/api.h
-ifeq ($(HAS_FFI),1)
-	cp -v build/aws-crt-ffi-shared/libaws-crt-ffi.$(SHLIB_SUFFIX_NAME) src/libaws-crt-ffi.$(SHLIB_SUFFIX_NAME)
-endif
-
 vendor/bin/phpunit:
 	composer update
 
-test-ffi: vendor/bin/phpunit ffi
-ifeq ($(HAS_FFI),1)
-	AWS_CRT_PHP_FFI=1 composer run test-ffi
-endif
-
 test-extension: vendor/bin/phpunit extension
 	AWS_CRT_PHP_EXTENSION=1 composer run test-extension
 
 # Use PHPUnit to run tests
-test: test-ffi test-extension
+test: test-extension
diff --git a/run_tests b/run_tests
index 5a14f25..b234e0e 100755
--- a/run_tests
+++ b/run_tests
@@ -2,4 +2,4 @@
 
 set -ex
 
-$PHP_BINARY -c php.ini vendor/bin/phpunit tests
+$PHP_BINARY -c php.ini vendor/bin/phpunit tests --debug
diff --git a/run_tests.bat b/run_tests.bat
index fd2fe4b..d3e0886 100644
--- a/run_tests.bat
+++ b/run_tests.bat
@@ -1,4 +1,4 @@
 
 @echo on
 
-%PHP_BINARY% -c php-win.ini vendor/bin/phpunit tests
+%PHP_BINARY% -c php-win.ini vendor/bin/phpunit tests --debug