diff --git a/test/src/main/java/org/springframework/security/test/web/support/WebTestUtils.java b/test/src/main/java/org/springframework/security/test/web/support/WebTestUtils.java
index d9be1dcf58..b42281dda0 100644
--- a/test/src/main/java/org/springframework/security/test/web/support/WebTestUtils.java
+++ b/test/src/main/java/org/springframework/security/test/web/support/WebTestUtils.java
@@ -114,7 +114,7 @@ public abstract class WebTestUtils {
 	}
 
 	@SuppressWarnings("unchecked")
-	private static <T extends Filter> T findFilter(HttpServletRequest request,
+	static <T extends Filter> T findFilter(HttpServletRequest request,
 			Class<T> filterClass) {
 		WebApplicationContext webApplicationContext = WebApplicationContextUtils
 				.getWebApplicationContext(request.getServletContext());
@@ -131,6 +131,9 @@ public abstract class WebTestUtils {
 		}
 		List<Filter> filters = (List<Filter>) ReflectionTestUtils.invokeMethod(
 				springSecurityFilterChain, "getFilters", request);
+		if(filters == null) {
+			return null;
+		}
 		for (Filter filter : filters) {
 			if (filterClass.isAssignableFrom(filter.getClass())) {
 				return (T) filter;
diff --git a/test/src/test/java/org/springframework/security/test/web/support/WebTestUtilsTests.java b/test/src/test/java/org/springframework/security/test/web/support/WebTestUtilsTests.java
index dbca9698a0..89b06342ef 100644
--- a/test/src/test/java/org/springframework/security/test/web/support/WebTestUtilsTests.java
+++ b/test/src/test/java/org/springframework/security/test/web/support/WebTestUtilsTests.java
@@ -32,6 +32,7 @@ import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
 import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
 import org.springframework.security.web.context.HttpSessionSecurityContextRepository;
+import org.springframework.security.web.context.SecurityContextPersistenceFilter;
 import org.springframework.security.web.context.SecurityContextRepository;
 import org.springframework.security.web.csrf.CsrfTokenRepository;
 import org.springframework.security.web.csrf.HttpSessionCsrfTokenRepository;
@@ -118,6 +119,14 @@ public class WebTestUtilsTests {
 		assertThat(getSecurityContextRepository(request)).isSameAs(contextRepo);
 	}
 
+	// gh-3343
+	@Test
+	public void findFilterNoMatchingFilters() {
+		loadConfig(PartialSecurityConfig.class);
+
+		assertThat(WebTestUtils.findFilter(request, SecurityContextPersistenceFilter.class)).isNull();
+	}
+
 	private void loadConfig(Class<?> config) {
 		AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
 		context.register(config);
@@ -157,4 +166,18 @@ public class WebTestUtilsTests {
 		}
 		// @formatter:on
 	}
+
+
+
+	@EnableWebSecurity
+	static class PartialSecurityConfig extends WebSecurityConfigurerAdapter {
+
+		// @formatter:off
+		@Override
+		public void configure(HttpSecurity http) throws Exception {
+			http
+				.antMatcher("/willnotmatchthis");
+		}
+		// @formatter:on
+	}
 }
\ No newline at end of file