diff --git a/arch/x86/vdso/checkundef.sh b/arch/x86/vdso/checkundef.sh
index 490be1c38f94..7ee90a9b549d 100755
--- a/arch/x86/vdso/checkundef.sh
+++ b/arch/x86/vdso/checkundef.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 nm="$1"
 file="$2"
-"$nm" "$file" | grep '^ *U' > /dev/null 2>&1
+$nm "$file" | grep '^ *U' > /dev/null 2>&1
 if [ $? -eq 1 ]; then
     exit 0
 else