diff --git a/core/adapters/esrevenadapter.cpp b/core/adapters/esrevenadapter.cpp
index c55084e8..38a5be5d 100644
--- a/core/adapters/esrevenadapter.cpp
+++ b/core/adapters/esrevenadapter.cpp
@@ -1129,7 +1129,7 @@ DataBuffer EsrevenAdapter::ReadMemory(std::uintptr_t address, std::size_t size)
 
 bool EsrevenAdapter::WriteMemory(std::uintptr_t address, const DataBuffer& buffer)
 {
-    if (m_isTargetRunning)
+    if (m_isTargetRunning || !m_rspConnector)
         return false;
 
     size_t size = buffer.GetLength();
@@ -2926,6 +2926,9 @@ std::vector<TTDCallEvent> EsrevenAdapter::GetTTDCallsForSymbols(const std::strin
 		return events;
 	}
 
+	if (!m_rspConnector)
+		return events;
+
 	// Get settings
 	auto adapterSettings = GetAdapterSettings();
 	BNSettingsScope scope = SettingsResourceScope;
diff --git a/core/adapters/gdbadapter.cpp b/core/adapters/gdbadapter.cpp
index e60e3619..161d4673 100644
--- a/core/adapters/gdbadapter.cpp
+++ b/core/adapters/gdbadapter.cpp
@@ -725,7 +725,7 @@ DataBuffer GdbAdapter::ReadMemory(std::uintptr_t address, std::size_t size)
 
 bool GdbAdapter::WriteMemory(std::uintptr_t address, const DataBuffer& buffer)
 {
-    if (m_isTargetRunning)
+    if (m_isTargetRunning || !m_rspConnector)
         return false;
 
     size_t size = buffer.GetLength();