diff --git a/configure b/configure
index 7f55569b0..808029a79 100755
--- a/configure
+++ b/configure
@@ -11646,7 +11646,7 @@ $as_echo "#define APP_MACHINEID_SUPPORT 1" >>confdefs.h
       SYSTEMD_MIN_VERSION=234
 fi
 
-if test -n "SYSTEMD_MIN_VERSION"; then :
+if test -n "$SYSTEMD_MIN_VERSION"; then :
 
       pkg_config_init
 
diff --git a/configure.ac b/configure.ac
index 0ec8d6b7d..ea56aa838 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1145,7 +1145,7 @@ AS_IF([test "$APP_MACHINEID_SUPPORT" = yes],
       SYSTEMD_MIN_VERSION=234)
 
 dnl -- Look for libsystemd libraries
-AS_IF([test -n "SYSTEMD_MIN_VERSION"],[
+AS_IF([test -n "$SYSTEMD_MIN_VERSION"],[
       pkg_config_init
       PKG_CHECK_MODULES(SYSTEMD, systemd >= "$SYSTEMD_MIN_VERSION", [], $bailout)
       SYSTEMD_LIBS="-lsystemd"])