diff --git a/src/CBot/CBotInstr/CBotExprRetVar.cpp b/src/CBot/CBotInstr/CBotExprRetVar.cpp
index c0e0e18f..643a4690 100644
--- a/src/CBot/CBotInstr/CBotExprRetVar.cpp
+++ b/src/CBot/CBotInstr/CBotExprRetVar.cpp
@@ -110,7 +110,7 @@ CBotInstr* CBotExprRetVar::Compile(CBotToken*& p, CBotCStack* pStack, bool bMeth
                             if (var != nullptr)
                             {
                                 i->SetUniqNum(var->GetUniqNum());
-                                if (CBotFieldExpr::ProtectionError(pStk, preVar, var))
+                                if (CBotFieldExpr::CheckProtectionError(pStk, preVar, var))
                                 {
                                     pStk->SetError(CBotErrPrivate, pp);
                                     goto err;
diff --git a/src/CBot/CBotInstr/CBotExprVar.cpp b/src/CBot/CBotInstr/CBotExprVar.cpp
index 1963d30a..a15c9c9a 100644
--- a/src/CBot/CBotInstr/CBotExprVar.cpp
+++ b/src/CBot/CBotInstr/CBotExprVar.cpp
@@ -67,7 +67,7 @@ CBotInstr* CBotExprVar::Compile(CBotToken*& p, CBotCStack* pStack, CBotVar::Prot
 
             if (ident > 0 && ident < 9000)
             {
-                if (CBotFieldExpr::ProtectionError(pStk, nullptr, var, privat))
+                if (CBotFieldExpr::CheckProtectionError(pStk, nullptr, var, privat))
                 {
                     pStk->SetError(CBotErrPrivate, p);
                     goto err;
@@ -137,7 +137,7 @@ CBotInstr* CBotExprVar::Compile(CBotToken*& p, CBotCStack* pStack, CBotVar::Prot
                                 if (var != nullptr)
                                 {
                                     i->SetUniqNum(var->GetUniqNum());
-                                    if (CBotFieldExpr::ProtectionError(pStk, preVar, var, privat))
+                                    if (CBotFieldExpr::CheckProtectionError(pStk, preVar, var, privat))
                                     {
                                         pStk->SetError(CBotErrPrivate, pp);
                                         goto err;
diff --git a/src/CBot/CBotInstr/CBotFieldExpr.cpp b/src/CBot/CBotInstr/CBotFieldExpr.cpp
index 1d12a657..09ac5f8e 100644
--- a/src/CBot/CBotInstr/CBotFieldExpr.cpp
+++ b/src/CBot/CBotInstr/CBotFieldExpr.cpp
@@ -135,8 +135,8 @@ std::string CBotFieldExpr::GetDebugData()
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-bool CBotFieldExpr::ProtectionError(CBotCStack* pStack, CBotVar* pPrev, CBotVar* pVar,
-                                    CBotVar::ProtectionLevel privat)
+bool CBotFieldExpr::CheckProtectionError(CBotCStack* pStack, CBotVar* pPrev, CBotVar* pVar,
+                                         CBotVar::ProtectionLevel privat)
 {
     CBotVar::ProtectionLevel varPriv = pVar->GetPrivate();
 
diff --git a/src/CBot/CBotInstr/CBotFieldExpr.h b/src/CBot/CBotInstr/CBotFieldExpr.h
index 2ee2851a..67ab2f05 100644
--- a/src/CBot/CBotInstr/CBotFieldExpr.h
+++ b/src/CBot/CBotInstr/CBotFieldExpr.h
@@ -66,15 +66,19 @@ public:
     void RestoreStateVar(CBotStack* &pj, bool bMain) override;
 
     /*!
-     * \brief ProtectionError Test if access to a variable is not allowed.
-     * \param pStack
-     * \param pPrev
-     * \param pVar
-     * \param privat
-     * \return True if pVar is protected in the current context.
+     * \brief Check if access to a variable is allowed or not depending on public/private/protected setting
+     *
+     * If this function returns true, the caller is responsible for failing the compilation with ::CBotErrPrivate error.
+     * This function doesn't set the error flag itself.
+     *
+     * \param pStack Current compilation stack frame
+     * \param pPrev Class instance which variable to check is part of, or nullptr if not part of a class
+     * \param pVar Variable to check
+     * \param privat CBotVar::ProtectionLevel::ReadOnly if requesting read-only access, anything else otherwise
+     * \return true if pVar is inaccessible in the current context, false if access should be allowed
      */
-    static bool ProtectionError(CBotCStack* pStack, CBotVar* pPrev, CBotVar* pVar,
-                                CBotVar::ProtectionLevel privat = CBotVar::ProtectionLevel::Protected);
+    static bool CheckProtectionError(CBotCStack* pStack, CBotVar* pPrev, CBotVar* pVar,
+                                     CBotVar::ProtectionLevel privat = CBotVar::ProtectionLevel::Protected);
 
 protected:
     virtual const std::string GetDebugName() override { return "CBotFieldExpr"; }
diff --git a/src/CBot/CBotInstr/CBotLeftExpr.cpp b/src/CBot/CBotInstr/CBotLeftExpr.cpp
index 8201137e..4678ff8e 100644
--- a/src/CBot/CBotInstr/CBotLeftExpr.cpp
+++ b/src/CBot/CBotInstr/CBotLeftExpr.cpp
@@ -64,7 +64,7 @@ CBotLeftExpr* CBotLeftExpr::Compile(CBotToken* &p, CBotCStack* pStack)
             inst->m_nIdent = var->GetUniqNum();
             if (inst->m_nIdent > 0 && inst->m_nIdent < 9000)
             {
-                if (CBotFieldExpr::ProtectionError(pStk, nullptr, var, CBotVar::ProtectionLevel::ReadOnly))
+                if (CBotFieldExpr::CheckProtectionError(pStk, nullptr, var, CBotVar::ProtectionLevel::ReadOnly))
                 {
                     pStk->SetError(CBotErrPrivate, p);
                     goto err;
@@ -128,7 +128,8 @@ CBotLeftExpr* CBotLeftExpr::Compile(CBotToken* &p, CBotCStack* pStack)
                             var = var->GetItem(p->GetString());            // get item correspondent
                             if (var != nullptr)
                             {
-                                if (CBotFieldExpr::ProtectionError(pStk, preVar, var, CBotVar::ProtectionLevel::ReadOnly))
+                                if (CBotFieldExpr::CheckProtectionError(pStk, preVar, var,
+                                                                        CBotVar::ProtectionLevel::ReadOnly))
                                 {
                                     pStk->SetError(CBotErrPrivate, pp);
                                     goto err;
diff --git a/src/CBot/CBotTypResult.h b/src/CBot/CBotTypResult.h
index cd8d7468..00683ca5 100644
--- a/src/CBot/CBotTypResult.h
+++ b/src/CBot/CBotTypResult.h
@@ -106,7 +106,7 @@ public:
 
     /**
      * \brief Returns ::CBotType or ::CBotError stored in this object
-     * \param mode Mode, see ::GetTypeMode enum
+     * \param mode Mode, see GetTypeMode enum
      */
     int         GetType(GetTypeMode mode = GetTypeMode::NORMAL) const;