diff --git a/src/language/node_processor/DoWhileProcessor.hpp b/src/language/node_processor/DoWhileProcessor.hpp
index 5b03b769ffe3e376c5e8bddafa91db5d01e2f59f..6f3c14b7f8706c6d5480f792e449c1f110b74498 100644
--- a/src/language/node_processor/DoWhileProcessor.hpp
+++ b/src/language/node_processor/DoWhileProcessor.hpp
@@ -3,6 +3,7 @@
 
 #include <language/ast/ASTNode.hpp>
 #include <language/node_processor/INodeProcessor.hpp>
+#include <language/utils/SymbolTable.hpp>
 
 class DoWhileProcessor final : public INodeProcessor
 {
diff --git a/src/language/node_processor/ForProcessor.hpp b/src/language/node_processor/ForProcessor.hpp
index 8680aaf7ded0f7fabbc345682a9a32c772a44f08..4199e0c42867398167c2f1fa5927d87e7f4fddc6 100644
--- a/src/language/node_processor/ForProcessor.hpp
+++ b/src/language/node_processor/ForProcessor.hpp
@@ -3,6 +3,7 @@
 
 #include <language/ast/ASTNode.hpp>
 #include <language/node_processor/INodeProcessor.hpp>
+#include <language/utils/SymbolTable.hpp>
 
 class ForProcessor final : public INodeProcessor
 {
diff --git a/src/language/node_processor/WhileProcessor.hpp b/src/language/node_processor/WhileProcessor.hpp
index 20b0ac985ae43bfaf3f9b165f9a346aa82a9f3cb..af7cc604bb6c2d5f74cb894a1f05ba20acfb35f6 100644
--- a/src/language/node_processor/WhileProcessor.hpp
+++ b/src/language/node_processor/WhileProcessor.hpp
@@ -3,6 +3,7 @@
 
 #include <language/ast/ASTNode.hpp>
 #include <language/node_processor/INodeProcessor.hpp>
+#include <language/utils/SymbolTable.hpp>
 
 class WhileProcessor final : public INodeProcessor
 {
diff --git a/src/utils/Types.hpp b/src/utils/Types.hpp
index 482190cb6f4c34c614a1237c4c025bbb37812e20..2d53c59f17d00fbd44d92ebc5db06e529a5d47db 100644
--- a/src/utils/Types.hpp
+++ b/src/utils/Types.hpp
@@ -5,12 +5,12 @@ enum class ZeroType
 {
   zero
 };
-constexpr ZeroType zero = ZeroType::zero;
+constexpr inline ZeroType zero = ZeroType::zero;
 
 enum class IdentityType
 {
   identity
 };
-constexpr IdentityType identity = IdentityType::identity;
+constexpr inline IdentityType identity = IdentityType::identity;
 
 #endif   // TYPES_HPP