diff --git a/lib_standalone/WString.h b/lib_standalone/WString.h
index ee53d7456..48e08819b 100644
--- a/lib_standalone/WString.h
+++ b/lib_standalone/WString.h
@@ -33,7 +33,7 @@ class String {
         return lhs;
     }
 
-    bool isEmpty() {
+    bool isEmpty() const {
         return _str.empty();
     }
 
diff --git a/src/core/network.h b/src/core/network.h
index fcbcbef36..abfe3750d 100644
--- a/src/core/network.h
+++ b/src/core/network.h
@@ -43,7 +43,7 @@ namespace emsesp {
 #define NETWORK_RECONNECTION_DELAY_LONG 10000 // 10 seconds - for debugging
 #endif
 
-#define MAX_NETWORK_RECONNECTION_ATTEMPTS 3 // maximum number of network reconnection attempts before going to AP fallback
+#define MAX_NETWORK_RECONNECTION_ATTEMPTS 4 // maximum number of network reconnection attempts before going to AP fallback
 
 #define DNS_PORT 53 // dns server port for captive portal
 
diff --git a/test/test_api/test_shuntingYard.h b/test/test_api/test_shuntingYard.h
index 5210672c1..eabf68974 100644
--- a/test/test_api/test_shuntingYard.h
+++ b/test/test_api/test_shuntingYard.h
@@ -92,7 +92,7 @@ void shuntingYard_test21() {
 }
 
 void shuntingYard_test22() {
-    run_shuntingYard_test("", "boiler/storagetemp2 == ''");
+    run_shuntingYard_test("0", "boiler/storagetemp2 == ''");
 }
 
 void shuntingYard_test23() {