diff --git a/src/main/java/hu/akarnokd/rxjava2/operators/FlowableTransformers.java b/src/main/java/hu/akarnokd/rxjava2/operators/FlowableTransformers.java
index 2f9073a7..cfcbe996 100644
--- a/src/main/java/hu/akarnokd/rxjava2/operators/FlowableTransformers.java
+++ b/src/main/java/hu/akarnokd/rxjava2/operators/FlowableTransformers.java
@@ -32,7 +32,7 @@
 public final class FlowableTransformers {
     /** Utility class. */
     private FlowableTransformers() {
-        throw new IllegalStateException("No instance!");
+        throw new IllegalStateException("No instances!");
     }
 
     /**