diff --git a/build.sh b/build.sh
index ebb2d1b1fa1631160224020e86195a09c2a8a522..d703f8055c818b270e1d857de88966b119e45634 100755
--- a/build.sh
+++ b/build.sh
@@ -43,7 +43,12 @@ then
 fi
 
 # Clean directory
-sudo rm -rf build bin
+SUDO_PREFIX=""
+if [[ $(whoami) != "root" ]]
+then
+    SUDO_PREFIX="sudo"
+fi
+$SUDO_PREFIX rm -rf build bin
 
 ## Set environmental variables
 ENV_VARS=""
diff --git a/src/parsers b/src/parsers
index f9f2021d419c88e7f324b470d9282b085a9c4fcf..37c4d4c27de473c32b16e6bf38da2e9fa6fc5433 160000
--- a/src/parsers
+++ b/src/parsers
@@ -1 +1 @@
-Subproject commit f9f2021d419c88e7f324b470d9282b085a9c4fcf
+Subproject commit 37c4d4c27de473c32b16e6bf38da2e9fa6fc5433