diff --git a/build.sh b/build.sh
index 656d4cbae6f06234f8c1cdd5bc605eafe6e97608..d0ca553f5d4215fd813f45cf7f8a4cef323b6fe3 100755
--- a/build.sh
+++ b/build.sh
@@ -238,7 +238,7 @@ if [[ ${arg_sign_tool} = */ ]]; then
 fi
 
 if [[ ${arg_p7b} = "" ]]; then
-        arg_p7b=$(find ${arg_project} -name *.p7b | head -n 1)
+        arg_p7b=$(find ${arg_project} -name *.p7b && head -n 1)
         if [[ ${arg_p7b} = "" ]]; then
                 arg_p7b=openharmony_sx.p7b
         fi