diff --git a/jOOQ-website/src/main/resources/manual-3.0.xml b/jOOQ-website/src/main/resources/manual-3.0.xml
index d5ea427a38..50db7b7d04 100644
--- a/jOOQ-website/src/main/resources/manual-3.0.xml
+++ b/jOOQ-website/src/main/resources/manual-3.0.xml
@@ -9684,12 +9684,12 @@ Result<BookRecord> result = create.selectFrom(BOOK).where(BOOK.ID.equal(5)).fetc
         String sql = ctx.sql();
         
         // Exceptions are propagated through the JDBC and jOOQ APIs
-        if (sql.toLowerCase().startsWith("DROP")) {
+        if (sql.toUpperCase().startsWith("DROP")) {
             throw new SQLException("Statement not supported: " + sql);
         }
         
         // You decide, whether any given statement returns results, and how many
-        else if (sql.toLowerCase().startsWith("SELECT")) {
+        else if (sql.toUpperCase().startsWith("SELECT")) {
             
             // Always return one author record
             Result<AuthorRecord> result = create.newResult(AUTHOR);
diff --git a/jOOQ-website/src/main/resources/manual-3.1.xml b/jOOQ-website/src/main/resources/manual-3.1.xml
index 452e58e79a..aeef05a66f 100644
--- a/jOOQ-website/src/main/resources/manual-3.1.xml
+++ b/jOOQ-website/src/main/resources/manual-3.1.xml
@@ -10073,12 +10073,12 @@ Result<BookRecord> result = create.selectFrom(BOOK).where(BOOK.ID.equal(5)).fetc
         String sql = ctx.sql();
         
         // Exceptions are propagated through the JDBC and jOOQ APIs
-        if (sql.toLowerCase().startsWith("DROP")) {
+        if (sql.toUpperCase().startsWith("DROP")) {
             throw new SQLException("Statement not supported: " + sql);
         }
         
         // You decide, whether any given statement returns results, and how many
-        else if (sql.toLowerCase().startsWith("SELECT")) {
+        else if (sql.toUpperCase().startsWith("SELECT")) {
             
             // Always return one author record
             Result<AuthorRecord> result = create.newResult(AUTHOR);
diff --git a/jOOQ-website/src/main/resources/manual-3.2.xml b/jOOQ-website/src/main/resources/manual-3.2.xml
index ba63dade2b..29b6a80e15 100644
--- a/jOOQ-website/src/main/resources/manual-3.2.xml
+++ b/jOOQ-website/src/main/resources/manual-3.2.xml
@@ -10095,12 +10095,12 @@ Result<BookRecord> result = create.selectFrom(BOOK).where(BOOK.ID.equal(5)).fetc
         String sql = ctx.sql();
         
         // Exceptions are propagated through the JDBC and jOOQ APIs
-        if (sql.toLowerCase().startsWith("DROP")) {
+        if (sql.toUpperCase().startsWith("DROP")) {
             throw new SQLException("Statement not supported: " + sql);
         }
         
         // You decide, whether any given statement returns results, and how many
-        else if (sql.toLowerCase().startsWith("SELECT")) {
+        else if (sql.toUpperCase().startsWith("SELECT")) {
             
             // Always return one author record
             Result<AuthorRecord> result = create.newResult(AUTHOR);