diff --git a/src/api/java/Expr.java b/src/api/java/Expr.java
index 71a2e3e1e..707f3300d 100644
--- a/src/api/java/Expr.java
+++ b/src/api/java/Expr.java
@@ -1297,6 +1297,15 @@ public class Expr extends AST
 	return Native.getString(getContext().nCtx(), getNativeObject());
     }
 
+    /**
+     * Check whether expression is a concatenation
+     * @return a boolean
+     */
+    public boolean isConcat() 
+    {
+        return isApp() && getFuncDecl().getDeclKind() == Z3_decl_kind.Z3_OP_SEQ_CONCAT;
+    }
+
     /**
      * Indicates whether the term is a binary equivalence modulo namings.
      * Remarks: This binary predicate is used in proof terms. It captures