diff --git a/src/main/java/com/feedzai/commons/sql/abstraction/engine/impl/DB2Engine.java b/src/main/java/com/feedzai/commons/sql/abstraction/engine/impl/DB2Engine.java
index 039ae06d..79149adf 100644
--- a/src/main/java/com/feedzai/commons/sql/abstraction/engine/impl/DB2Engine.java
+++ b/src/main/java/com/feedzai/commons/sql/abstraction/engine/impl/DB2Engine.java
@@ -56,7 +56,6 @@
 import static com.feedzai.commons.sql.abstraction.util.StringUtils.md5;
 import static com.feedzai.commons.sql.abstraction.util.StringUtils.quotize;
 import static java.lang.String.format;
-import static java.util.Objects.isNull;
 import static org.apache.commons.lang3.StringUtils.join;
 
 /**
diff --git a/src/main/java/com/feedzai/commons/sql/abstraction/engine/impl/MySqlEngine.java b/src/main/java/com/feedzai/commons/sql/abstraction/engine/impl/MySqlEngine.java
index 1788df07..5b712802 100644
--- a/src/main/java/com/feedzai/commons/sql/abstraction/engine/impl/MySqlEngine.java
+++ b/src/main/java/com/feedzai/commons/sql/abstraction/engine/impl/MySqlEngine.java
@@ -52,7 +52,6 @@
 import static com.feedzai.commons.sql.abstraction.util.StringUtils.md5;
 import static com.feedzai.commons.sql.abstraction.util.StringUtils.quotize;
 import static java.lang.String.format;
-import static java.util.Objects.isNull;
 import static org.apache.commons.lang3.StringUtils.join;
 
 /**
diff --git a/src/main/java/com/feedzai/commons/sql/abstraction/engine/impl/PostgreSqlEngine.java b/src/main/java/com/feedzai/commons/sql/abstraction/engine/impl/PostgreSqlEngine.java
index 62279ac2..c2e638e4 100644
--- a/src/main/java/com/feedzai/commons/sql/abstraction/engine/impl/PostgreSqlEngine.java
+++ b/src/main/java/com/feedzai/commons/sql/abstraction/engine/impl/PostgreSqlEngine.java
@@ -58,7 +58,6 @@
 import static com.feedzai.commons.sql.abstraction.util.StringUtils.md5;
 import static com.feedzai.commons.sql.abstraction.util.StringUtils.quotize;
 import static java.lang.String.format;
-import static java.util.Objects.isNull;
 import static org.apache.commons.lang3.StringUtils.join;
 
 /**
diff --git a/src/main/java/com/feedzai/commons/sql/abstraction/engine/impl/SqlServerEngine.java b/src/main/java/com/feedzai/commons/sql/abstraction/engine/impl/SqlServerEngine.java
index 7bdf9358..2ee98fa7 100644
--- a/src/main/java/com/feedzai/commons/sql/abstraction/engine/impl/SqlServerEngine.java
+++ b/src/main/java/com/feedzai/commons/sql/abstraction/engine/impl/SqlServerEngine.java
@@ -51,7 +51,6 @@
 import static com.feedzai.commons.sql.abstraction.util.StringUtils.md5;
 import static com.feedzai.commons.sql.abstraction.util.StringUtils.quotize;
 import static java.lang.String.format;
-import static java.util.Objects.isNull;
 import static org.apache.commons.lang3.StringUtils.join;
 
 /**