diff --git a/example/01_gemm/run_gemm_example.inc b/example/01_gemm/run_gemm_example.inc
index 0e42c91d41..a6f0d0bcfe 100644
--- a/example/01_gemm/run_gemm_example.inc
+++ b/example/01_gemm/run_gemm_example.inc
@@ -305,6 +305,14 @@ bool run_gemm(const ProblemType& problem_size, const ExecutionConfig& config)
         }
 #endif
     }
+    else
+    {
+        // When the Problem Type and Problem Size does not fit.
+
+        std::cerr << gemm.GetTypeString() << ": the instance does not support the problem config."
+                  << std::endl;
+        return true;
+    }
 
     std::size_t flop = 2_uz * M * N * K;
     std::size_t num_btype =