diff --git a/travis/check_64_to_32.sh b/travis/check_64_to_32.sh
new file mode 100755
index 0000000000..5037d69d08
--- /dev/null
+++ b/travis/check_64_to_32.sh
@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+cd src
+make  64_to_32 CONVERT_ALL=y
+make  32_to_64
+rm -f diff.out
+git diff -U0 . >& diff.out
+if [ $(wc -l diff.out | cut -d " " -f 1) != 0 ]; then
+    cat diff.out
+    echo "********** check_64_to_32 *********"
+    echo "********** found missing files ****"
+    echo "********** from USES_BLAS *********"
+    grep 'diff --git' diff.out  | cut -d ' ' -f 4 | sed -e "s/b\/src/src/" 
+    echo "***********************************"
+    exit 1
+else
+    echo "********** check_64_to_32 *********"
+    echo "********** found no missing files ****"
+    echo "********** from USES_BLAS *********"
+fi