diff --git a/jOOQ/src/main/java/org/jooq/impl/ParsingConnection.java b/jOOQ/src/main/java/org/jooq/impl/ParsingConnection.java
index d09e3e3386..f8ef1ba9e4 100644
--- a/jOOQ/src/main/java/org/jooq/impl/ParsingConnection.java
+++ b/jOOQ/src/main/java/org/jooq/impl/ParsingConnection.java
@@ -54,7 +54,9 @@ import java.util.Map;
 import org.jooq.Configuration;
 import org.jooq.DSLContext;
 import org.jooq.Param;
+import org.jooq.SQLDialect;
 import org.jooq.exception.DataAccessException;
+import org.jooq.exception.DetachedException;
 import org.jooq.impl.DefaultRenderContext.Rendered;
 import org.jooq.impl.Tools.Cache;
 import org.jooq.tools.JooqLogger;
@@ -72,6 +74,9 @@ final class ParsingConnection extends DefaultConnection {
     ParsingConnection(Configuration configuration) {
         super(configuration.connectionProvider().acquire());
 
+        if (getDelegate() == null)
+            throw new DetachedException("ConnectionProvider did not provide a JDBC Connection");
+
         this.configuration = configuration;
     }
 
diff --git a/jOOQ/src/main/java/org/jooq/impl/ParsingConnectionFactory.java b/jOOQ/src/main/java/org/jooq/impl/ParsingConnectionFactory.java
index b186b5c96d..51a9e4eced 100644
--- a/jOOQ/src/main/java/org/jooq/impl/ParsingConnectionFactory.java
+++ b/jOOQ/src/main/java/org/jooq/impl/ParsingConnectionFactory.java
@@ -48,6 +48,7 @@ import java.util.List;
 
 import org.jooq.Configuration;
 import org.jooq.Param;
+import org.jooq.exception.DetachedException;
 import org.jooq.impl.DefaultRenderContext.Rendered;
 
 import org.reactivestreams.Publisher;
@@ -72,6 +73,9 @@ final class ParsingConnectionFactory implements ConnectionFactory {
     final Configuration configuration;
 
     ParsingConnectionFactory(Configuration configuration) {
+        if (configuration.connectionFactory() instanceof NoConnectionFactory)
+            throw new DetachedException("ConnectionProvider did not provide an R2DBC ConnectionFactory");
+
         this.configuration = configuration.derive();
         this.configuration.set(setParamType(configuration.dialect(), configuration.settings()));
     }