diff --git a/build.sh b/build.sh
index 67bc2c5b1fd3..807a57ab8f0a 100755
--- a/build.sh
+++ b/build.sh
@@ -129,6 +129,8 @@ build_coreclr()
     # processors available to a single process.
     if [ `uname` = "FreeBSD" ]; then
         NumProc=`sysctl hw.ncpu | awk '{ print $2+1 }'`
+    elif [ `uname` = "NetBSD" ]; then
+        NumProc=$(($(getconf NPROCESSORS_ONLN)+1))
     else
         NumProc=$(($(getconf _NPROCESSORS_ONLN)+1))
     fi
diff --git a/run-cppcheck.sh b/run-cppcheck.sh
index 6888468bfa45..c505fd184ded 100755
--- a/run-cppcheck.sh
+++ b/run-cppcheck.sh
@@ -41,6 +41,8 @@ SloccountOutput="sloccount.sc"
 # processors available to a single process.
 if [ `uname` = "FreeBSD" ]; then
 NumProc=`sysctl hw.ncpu | awk '{ print $2+1 }'`
+elif [ `uname` = "NetBSD" ]; then
+NumProc=$(($(getconf NPROCESSORS_ONLN)+1))
 else
 NumProc=$(($(getconf _NPROCESSORS_ONLN)+1))
 fi
@@ -114,4 +116,4 @@ then
 fi
 
 echo Check finished.  Results can be found in: $CppCheckOutputs $SlocCountOutputs
-exit 0
\ No newline at end of file
+exit 0