diff --git a/.circleci/config.yml b/.circleci/config.yml
index c99d0b3..fa16804 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -133,6 +133,7 @@ jobs:
               topsApp.py --help --steps
               stripmapApp.py --help --steps
               python3 -c "import isce"
+              python3 -c "import isce; from isceobj.Sensor import SENSORS as s; [s[k]() for k in s]"
   build:
     docker:
       - image: docker:stable-git
@@ -169,9 +170,8 @@ jobs:
           name: Install dependencies
           command: |
             apk add --no-cache \
-              python3-dev py3-pip bash pigz build-base libffi-dev openssl-dev
-            pip install \
-              docker-compose awscli
+              python3-dev py3-pip bash pigz build-base libffi-dev openssl-dev \
+              docker-compose aws-cli
       - run:
           name: Build docker image
           command: |
@@ -195,9 +195,8 @@ jobs:
           name: Install dependencies
           command: |
             apk add --no-cache \
-              python3-dev py3-pip bash pigz build-base libffi-dev openssl-dev
-            pip install \
-              docker-compose awscli
+              python3-dev py3-pip bash pigz build-base libffi-dev openssl-dev \
+              docker-compose aws-cli
       - run:
           name: Build docker image
           command: |
diff --git a/components/isceobj/Sensor/bindings/SConscript b/components/isceobj/Sensor/bindings/SConscript
index dcdb8b4..87c3ca2 100644
--- a/components/isceobj/Sensor/bindings/SConscript
+++ b/components/isceobj/Sensor/bindings/SConscript
@@ -13,7 +13,8 @@ libList2 = ['cosar','DataAccessor','InterleavedAccessor']
 envSensor1.PrependUnique(LIBS = libList1)
 envSensor2.PrependUnique(LIBS = libList2)
 
-alosmodule = envSensor1.LoadableModule(target = 'alos.abi3.so', source = 'alosmodule.cpp')
+alosmodule = envSensor1.LoadableModule(target = 'alos.abi3.so',
+        source = [ 'alosmodule.cpp', '../src/ALOS_pre_process/image_sio.c' ])
 envSensor1.Install(install,alosmodule)
 
 cosarmodule = envSensor2.LoadableModule(target = 'cosar.abi3.so', source = 'cosarmodule.cpp')