diff --git a/src/etc/lexer.cpp b/src/etc/lexer.cpp
index 6026624..09024da 100644
--- a/src/etc/lexer.cpp
+++ b/src/etc/lexer.cpp
@@ -3,7 +3,7 @@ using namespace std;
 using enum tok::type;
 
 tok::type getIdentifierCharType(const char& Char) {
-    if (isalpha(Char)) return IDENTIFIER;
+    if (isalpha(Char) || Char == '_') return IDENTIFIER;
     else if (isdigit(Char)) return NUMBER;
     else if (Char == STRING) return STRING;
     else return UNEXPECTED;