diff --git a/include/TGUI/Signal.hpp b/include/TGUI/Signal.hpp
index 1aca71bb..ca5be74d 100644
--- a/include/TGUI/Signal.hpp
+++ b/include/TGUI/Signal.hpp
@@ -798,18 +798,7 @@ namespace tgui
         ///
         /// @return True when a connection with this id existed and was removed
         /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-        bool disconnect(unsigned int id)
-        {
-            auto it = m_connectedSignals.find(id);
-            if (it != m_connectedSignals.end())
-            {
-                const bool ret = getSignal(it->second).disconnect(id);
-                m_connectedSignals.erase(it);
-                return ret;
-            }
-            else // The id was not found
-                return false;
-        }
+        bool disconnect(unsigned int id);
 
 
         /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
diff --git a/src/TGUI/Signal.cpp b/src/TGUI/Signal.cpp
index f67fa32e..144d5a14 100644
--- a/src/TGUI/Signal.cpp
+++ b/src/TGUI/Signal.cpp
@@ -360,6 +360,21 @@ namespace tgui
     /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
     /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
+    bool SignalWidgetBase::disconnect(unsigned int id)
+    {
+        auto it = m_connectedSignals.find(id);
+        if (it != m_connectedSignals.end())
+        {
+            const bool ret = getSignal(it->second).disconnect(id);
+            m_connectedSignals.erase(it);
+            return ret;
+        }
+        else // The id was not found
+            return false;
+    }
+
+    /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
     void SignalWidgetBase::disconnectAll(std::string signalName)
     {
         return getSignal(toLower(std::move(signalName))).disconnectAll();