diff --git a/SYMBOL/ALGOL.alg_m b/SYMBOL/ALGOL.alg_m
index 7b6798f..0eaa4fb 100644
--- a/SYMBOL/ALGOL.alg_m
+++ b/SYMBOL/ALGOL.alg_m
@@ -12211,7 +12211,7 @@ PROCEDURE DSS;                                                          16362000
          IF ELCLASS = LITV THEN                                         16381000          
               BEGIN                                                     16382000          
               EMITC(ADDR,TRP);                                          16383000          
-              IF STEPI!STRING AND ELCLASS!STRNGCON AND             %111-16384000          
+              IF STEPI ! STRING AND ELCLASS ! STRNGCON AND         %111-16384000          
                 ELCLASS ! LITNO AND ELCLASS ! NONLITNO THEN        %111-16384100          
                    BEGIN ERR(255);GO TO EXIT END;                       16384500          
                 IF ELCLASS = LITNO OR ELCLASS = NONLITNO THEN      %111-16384700