diff --git a/htdocs/categories/class/categorie.class.php b/htdocs/categories/class/categorie.class.php
index d5c135279bf..e7c361322bc 100644
--- a/htdocs/categories/class/categorie.class.php
+++ b/htdocs/categories/class/categorie.class.php
@@ -728,8 +728,6 @@ class Categorie extends CommonObject
 				}
 			}
 
-
-
 			// Call trigger
 			$this->context = array('linkto'=>$obj); // Save object we want to link category to into category instance to provide information to trigger
 			$result = $this->call_trigger('CATEGORY_LINK', $user);
@@ -755,6 +753,8 @@ class Categorie extends CommonObject
 			}
 			return -1;
 		}
+
+		return 0;
 	}
 
 	// phpcs:disable PEAR.NamingConventions.ValidFunctionName.ScopeNotCamelCaps
@@ -810,6 +810,8 @@ class Categorie extends CommonObject
 			$this->error = $this->db->lasterror();
 			return -1;
 		}
+
+		return 0;
 	}
 
 	/**
diff --git a/htdocs/core/class/commonobject.class.php b/htdocs/core/class/commonobject.class.php
index abb9f05baa8..9383759fb8e 100644
--- a/htdocs/core/class/commonobject.class.php
+++ b/htdocs/core/class/commonobject.class.php
@@ -9461,7 +9461,7 @@ abstract class CommonObject
 		}
 
 		$error = 0;
-		$ok=0;
+		$ok = 0;
 
 		// Process
 		foreach ($to_del as $del) {
@@ -9473,7 +9473,7 @@ abstract class CommonObject
 					$this->errors = $c->errors;
 					break;
 				} else {
-					$ok+=$result;
+					$ok += $result;
 				}
 			}
 		}
@@ -9486,7 +9486,7 @@ abstract class CommonObject
 					$this->errors = $c->errors;
 					break;
 				} else {
-					$ok+=$result;
+					$ok += $result;
 				}
 			}
 		}