diff --git a/jOOQ-codegen/src/main/java/org/jooq/codegen/GenerationTool.java b/jOOQ-codegen/src/main/java/org/jooq/codegen/GenerationTool.java
index 14223323ef..c5b661b415 100644
--- a/jOOQ-codegen/src/main/java/org/jooq/codegen/GenerationTool.java
+++ b/jOOQ-codegen/src/main/java/org/jooq/codegen/GenerationTool.java
@@ -903,7 +903,9 @@ public class GenerationTool {
             // Close connection only if it was created by the GenerationTool
             if (connection != null) {
                 if (close) {
-                    if (ctx.family() == HSQLDB && dataSource == null)
+
+                    // [#11105] In case of misconfiguration, the ctx reference could be null as a side effect
+                    if (ctx != null && ctx.family() == HSQLDB && dataSource == null)
                         ctx.execute("shutdown");
 
                     connection.close();