diff --git a/src/sc_man.cpp b/src/sc_man.cpp
index de668ee42..05abe1784 100644
--- a/src/sc_man.cpp
+++ b/src/sc_man.cpp
@@ -530,8 +530,19 @@ bool FScanner::GetToken ()
 		else if (TokenType == TK_IntConst)
 		{
 			char *stopper;
-			Number = strtol(String, &stopper, 0);
-			Float = Number;
+			// Check for unsigned
+			if (String[StringLen - 1] == 'u' || String[StringLen - 1] == 'U' ||
+				String[StringLen - 2] == 'u' || String[StringLen - 2] == 'U')
+			{
+				TokenType = TK_UIntConst;
+				Number = strtoul(String, &stopper, 0);
+				Float = (unsigned)Number;
+			}
+			else
+			{
+				Number = strtol(String, &stopper, 0);
+				Float = Number;
+			}
 		}
 		else if (TokenType == TK_FloatConst)
 		{
diff --git a/src/sc_man_scanner.re b/src/sc_man_scanner.re
index 328e7afdb..4da98736e 100644
--- a/src/sc_man_scanner.re
+++ b/src/sc_man_scanner.re
@@ -188,7 +188,7 @@ std2:
 
 		L (L|D)*					{ RET(TK_Identifier); }
 
-		("0" [xX] H+ IS?) | ("0" D+ IS?) | (D+ IS?)
+		("0" [xX] H+ IS?IS?) | ("0" D+ IS?IS?) | (D+ IS?IS?)
 									{ RET(TK_IntConst); }
 
 		(D+ E FS?) | (D* "." D+ E? FS?) | (D+ "." D* E? FS?)
diff --git a/src/sc_man_tokens.h b/src/sc_man_tokens.h
index e98c457b5..6bc01c184 100644
--- a/src/sc_man_tokens.h
+++ b/src/sc_man_tokens.h
@@ -2,6 +2,7 @@ xx(TK_Identifier,			"identifier")
 xx(TK_StringConst,			"string constant")
 xx(TK_NameConst,			"name constant")
 xx(TK_IntConst,				"integer constant")
+xx(TK_UIntConst,			"unsigned constant")
 xx(TK_FloatConst,			"float constant")
 xx(TK_NonWhitespace,		"non-whitespace")
 xx(TK_ColonColon,			"'::'")