diff --git a/ci/env.sh b/ci/env.sh
index ad76689..92f0c3e 100644
--- a/ci/env.sh
+++ b/ci/env.sh
@@ -1,9 +1,13 @@
 case $TRAVIS_OS_NAME in
     linux)
         export HOST=x86_64-unknown-linux-gnu
+        export NM=nm
+        export OBJDUMP=objdump
         ;;
     osx)
         export HOST=x86_64-apple-darwin
+        export NM=gnm
+        export OBJDUMP=gobjdump
         ;;
 esac
 
diff --git a/ci/script.sh b/ci/script.sh
index c3e1a65..c1748fc 100644
--- a/ci/script.sh
+++ b/ci/script.sh
@@ -17,10 +17,10 @@ run_tests() {
 }
 
 inspect() {
-    ${PREFIX}nm -g target/**/debug/*.rlib
+    $PREFIX$NM -g --defined-only target/**/debug/*.rlib
     set +e
-    ${PREFIX}objdump -Cd target/**/debug/*.rlib
-    ${PREFIX}objdump -Cd target/**/release/*.rlib
+    $PREFIX$OBJDUMP -Cd target/**/debug/*.rlib
+    $PREFIX$OBJDUMP -Cd target/**/release/*.rlib
     set -e
 }