diff --git a/DragonLisp.l b/DragonLisp.l
index 2ef8bfd..09494e6 100644
--- a/DragonLisp.l
+++ b/DragonLisp.l
@@ -57,6 +57,8 @@ dotimes	[dD][oO][tT][iI][mM][eE][sS]
 dolist	[dD][oO][lL][iI][sS][tT]
 do		[dD][oO]
 aref	[aA][rR][eE][fF]
+t		[tT]
+nil		[nN][iI][lL]
 makearray	[mM][aA][kK][eE][-][aA][rR][rR][aA][yY]
 defconstant	[dD][eE][fF][cC][oO][nN][sS][tT][aA][nN][tT]
 
@@ -315,6 +317,16 @@ defconstant	[dD][eE][fF][cC][oO][nN][sS][tT][aA][nN][tT]
 	return token::TOKEN_AREF;
 };
 
+{t}		{
+	std::printf("Scanned t\n");
+	return token::TOKEN_T;
+};
+
+{nil}	{
+	std::printf("Scanned nil\n");
+	return token::TOKEN_NIL;
+};
+
 {makearray}	{
 	std::printf("Scanned makearray\n");
 	return token::TOKEN_MAKE_ARRAY;
diff --git a/DragonLisp.y b/DragonLisp.y
index 33e55cb..ca5f171 100644
--- a/DragonLisp.y
+++ b/DragonLisp.y
@@ -84,6 +84,8 @@ namespace DragonLisp {
     DOLIST		"dolist"
     DO			"do"
     AREF		"aref"
+    T			"t"
+    NIL			"nil"
     MAKE_ARRAY		"make-array"
     DEFCONSTANT		"defconstant"
 ;
@@ -136,6 +138,8 @@ R-Value
 	| FLOAT		{ std::printf("Parsed R-Value -> FLOAT\n"); }
 	| STRING	{ std::printf("Parsed R-Value -> STRING\n"); }
 	| array-ref	{ std::printf("Parsed R-Value -> array-ref\n"); }
+	| NIL		{ std::printf("Parsed R-Value -> NIL\n"); }
+	| T		{ std::printf("Parsed R-Value -> T\n"); }
 ;
 
 R-Value-list