diff --git a/ext/phalcon/assets/filters/cssminifier.c b/ext/phalcon/assets/filters/cssminifier.c
index d94fcf4bc97..0bb3f95dfcd 100644
--- a/ext/phalcon/assets/filters/cssminifier.c
+++ b/ext/phalcon/assets/filters/cssminifier.c
@@ -113,7 +113,7 @@ static int phalcon_cssmin_machine(cssmin_parser *parser, unsigned char c TSRMLS_
 
 	switch (parser->state) {
 		case STATE_FREE:
-			if (c == ' ' && c == '\t' && c == '\n' && c == '\r') {
+			if (c == ' ' || c == '\t' || c == '\n' || c == '\r') {
 				c = 0;
 			} else if (c == '@'){
 				parser->state = STATE_ATRULE;
diff --git a/tests/unit/Assets/Filters/CssMinTest.php b/tests/unit/Assets/Filters/CssMinTest.php
index c78e46965ca..0258c6c230f 100644
--- a/tests/unit/Assets/Filters/CssMinTest.php
+++ b/tests/unit/Assets/Filters/CssMinTest.php
@@ -72,7 +72,7 @@ public function testAssetsFilterCssmin()
             "The cssmin filter with space as parameter does not return correct results",
             function () {
                 $cssmin = new Cssmin();
-                expect($cssmin->filter(' '))->equals(' ');
+                expect($cssmin->filter(' '))->equals('');
             }
         );