diff --git a/contrib/scripts/install_prereq b/contrib/scripts/install_prereq
index 19da358e37170093626a25776989c7d78c3526ab..367a9a97559f9436dd36c88db94f68d228e7dd35 100755
--- a/contrib/scripts/install_prereq
+++ b/contrib/scripts/install_prereq
@@ -19,7 +19,7 @@ usage() {
 }
 
 # Basic build system:
-PACKAGES_DEBIAN="build-essential"
+PACKAGES_DEBIAN="build-essential pkg-config"
 # Asterisk: basic requirements:
 PACKAGES_DEBIAN="$PACKAGES_DEBIAN libedit-dev libjansson-dev libsqlite3-dev uuid-dev libxml2-dev"
 # Asterisk: for addons: