diff --git a/src/WireMock.Net/Matchers/JSONPathMatcher.cs b/src/WireMock.Net/Matchers/JSONPathMatcher.cs
index 21f78ea3..14eccf19 100644
--- a/src/WireMock.Net/Matchers/JSONPathMatcher.cs
+++ b/src/WireMock.Net/Matchers/JSONPathMatcher.cs
@@ -67,7 +67,7 @@ public class JsonPathMatcher : IStringMatcher, IObjectMatcher
         var score = MatchScores.Mismatch;
         Exception? exception = null;
 
-        if (input != null)
+        if (!string.IsNullOrWhiteSpace(input))
         {
             try
             {
diff --git a/src/WireMock.Net/Matchers/JmesPathMatcher.cs b/src/WireMock.Net/Matchers/JmesPathMatcher.cs
index 83b88d19..884ba0ff 100644
--- a/src/WireMock.Net/Matchers/JmesPathMatcher.cs
+++ b/src/WireMock.Net/Matchers/JmesPathMatcher.cs
@@ -74,7 +74,7 @@ public class JmesPathMatcher : IStringMatcher, IObjectMatcher
         var score = MatchScores.Mismatch;
         Exception? exception = null;
 
-        if (input != null)
+        if (!string.IsNullOrWhiteSpace(input))
         {
             try
             {