diff --git a/examples/c3d_ucf101/test_ucf101.sh b/examples/c3d_ucf101/test_ucf101.sh
index 3d76fa75..f185881b 100755
--- a/examples/c3d_ucf101/test_ucf101.sh
+++ b/examples/c3d_ucf101/test_ucf101.sh
@@ -1,19 +1,23 @@
-#!/usr/bin/env sh
+#!/usr/bin/env bash
 
 # get the last model (latest)
 LASTMODEL=$(ls -1t examples/c3d_ucf101/c3d_ucf101_iter_*.caffemodel | head -n 1)
 echo "[Info] The caffemodel to be used: ${LASTMODEL}"
 
-# check the # test samples and batch_size: 41822/30=1395
-NUMITERS=1395
-echo "[Info] Tested for ${NUMITERS} iterations"
+# model architecture
+MODELDEF=examples/c3d_ucf101/c3d_ucf101_test.prototxt
+BATCHSIZE=$(egrep batch_size ${MODELDEF} | awk '{print $2}')
+NUMTESTEXAMPLES=$(wc -l $(egrep source ${MODELDEF} | awk '{print $2}' | tr -d '"') | awk '{print $1}')
+let NUMITERS=(${NUMTESTEXAMPLES}+${BATCHSIZE}-1)/${BATCHSIZE}
+
+echo "[Info] Tested for ${NUMITERS} iterations (${NUMTESTEXAMPLES}/${BATCHSIZE})"
 
 if [ -z "${LASTMODEL}" ]; then
   echo "[Error] Can not find the model. Check the caffemodel name."
 else
   build/tools/caffe \
     test \
-  --model=examples/c3d_ucf101/c3d_ucf101_test.prototxt \
+  --model=${MODELDEF} \
   --weights=${LASTMODEL} \
   --iterations=${NUMITERS} \
   --gpu=0 \