diff --git a/inc/css-builder.php b/inc/css-builder.php
index 681c4edf0..45da5a439 100644
--- a/inc/css-builder.php
+++ b/inc/css-builder.php
@@ -30,7 +30,7 @@ public function add_css( $selector, $attributes, $resolution = 1920 ) {
 					if ( ! strlen( (string) $v[ $i ] ) ) continue;
 					$attribute_string[] = wp_strip_all_tags( $k ) . ':' . wp_strip_all_tags( $v[ $i ] );
 				}
-			} elseif ( ! strlen( (string) $v ) || $v == 'px' ) {
+			} elseif ( ! strlen( (string) $v ) || $v === 'px' ) {
 				continue;
 			} else {
 				$attribute_string[] = wp_strip_all_tags( $k ) . ':' . wp_strip_all_tags( $v );
diff --git a/readme.txt b/readme.txt
index 48ae5e3c6..6e647b01c 100644
--- a/readme.txt
+++ b/readme.txt
@@ -107,6 +107,9 @@ SiteOrigin Premium includes access to our professional email support service, pe
 
 == Changelog ==
 
+= 2.16.7 - 23 March 2022 =
+* Improved empty CSS rule check to avoid potential edge cases.
+
 = 2.16.6 - 21 March 2022 =
 * Prevented CSS properties outputting with only `px` set as the value.
 * WPML: Refined sidebar emulator language path removal.