diff --git a/source/angledb.f b/source/angledb.f
index 28ad657..eaa847d 100644
--- a/source/angledb.f
+++ b/source/angledb.f
@@ -1416,10 +1416,10 @@ C include files
 C local variables
       INTEGER COUNT, SPTR, OLDCLASS, OLDMAXANGLEDBS
       INTEGER THETYPE, CURPSIS, CURPHIS
-      INTEGER CLASSINDEX
+      INTEGER CLASINDEX
       DOUBLE PRECISION K1, CUTOFF
       CHARACTER*4 THENAME
-      CHARACTER*20 CLASSNAME
+      CHARACTER*20 CLASNAME
 C begin
 C
       IF (ANGLEDBFLAG) THEN
@@ -1450,10 +1450,10 @@ C
            ELSE IF (WD(1:4).EQ.'CLAS') THEN
                 OLDCLASS = CURANGLEDBCLASS
                 CALL NEXTWD('class name =')
-                CLASSNAME = WD(1:20)
+                CLASNAME = WD(1:20)
                 ANGLEDBMODE = NEW
                 DO COUNT = 1, NANGLEDBCLASSES
-                     IF (ANGDBCLASSNAMES(COUNT).EQ.CLASSNAME) THEN
+                     IF (ANGDBCLASSNAMES(COUNT).EQ.CLASNAME) THEN
                           ANGLEDBMODE = UPDATE
                           CURANGLEDBCLASS = COUNT
                      END IF
@@ -1472,7 +1472,7 @@ C
                      END IF
                      NANGLEDBCLASSES = NANGLEDBCLASSES + 1
                      CURANGLEDBCLASS = NANGLEDBCLASSES
-                     ANGDBCLASSNAMES(CURANGLEDBCLASS) = CLASSNAME
+                     ANGDBCLASSNAMES(CURANGLEDBCLASS) = CLASNAME
                      ANGLEDBASSNDX(CURANGLEDBCLASS) = NANGLEDBS
                 END IF
 C
@@ -1733,16 +1733,16 @@ C
      &                         HEAP(ANGLEDBTPTR))
                      ELSE IF (WD(1:4).EQ.'CLAS') THEN
                           CALL NEXTWD('Class name>')
-                          CLASSNAME = WD(1:20)
-                          CLASSINDEX = 0
+                          CLASNAME = WD(1:20)
+                          CLASINDEX = 0
                           DO COUNT = 1, NANGLEDBCLASSES
                                IF (ANGDBCLASSNAMES(COUNT).EQ.
-     &                              CLASSNAME) THEN
+     &                              CLASNAME) THEN
                                     PRINTTHISCLASS(COUNT) = .TRUE.
-                                    CLASSINDEX = COUNT
+                                    CLASINDEX = COUNT
                                END IF
                           END DO
-                          IF (CLASSINDEX.EQ.0) THEN
+                          IF (CLASINDEX.EQ.0) THEN
                                CALL DSPERR('ANGLEDB',
      &                              'unknown class. Using first.')
                                PRINTTHISCLASS(1) = .TRUE.
diff --git a/source/rama.f b/source/rama.f
index c5d14f2..3063e7b 100644
--- a/source/rama.f
+++ b/source/rama.f
@@ -1468,11 +1468,11 @@ C include files
 C local variables
       INTEGER COUNT, SPTR, OLDCLASS, OLDMAXRAMAS,
      &     THETYPE, CURPSIS, CURPHIS,
-     &     CURCHIS, CURTHTS, CLASSINDEX
+     &     CURCHIS, CURTHTS, CLASINDEX
       INTEGER CLEN
       DOUBLE PRECISION K1, CUTOFF
       CHARACTER*4 THENAME
-      CHARACTER*50 CLASSNAME
+      CHARACTER*50 CLASNAME
 C begin
 C
 C this is used by READRAMA2 to hold the selection
@@ -1503,10 +1503,10 @@ C
            ELSE IF (WD(1:4).EQ.'CLAS') THEN
                 OLDCLASS = CURRAMACLASS
                 CALL NEXTWD('class name =')
-                CLASSNAME = WD(1:50)
+                CLASNAME = WD(1:50)
                 RAMAMODE = NEW
                 DO COUNT = 1, NRAMACLASSES
-                     IF (RAMACLASSNAMES(COUNT).EQ.CLASSNAME) THEN
+                     IF (RAMACLASSNAMES(COUNT).EQ.CLASNAME) THEN
                           RAMAMODE = UPDATE
                           CURRAMACLASS = COUNT
                      END IF
@@ -1525,7 +1525,7 @@ C
                      END IF
                      NRAMACLASSES = NRAMACLASSES + 1
                      CURRAMACLASS = NRAMACLASSES
-                     RAMACLASSNAMES(CURRAMACLASS) = CLASSNAME
+                     RAMACLASSNAMES(CURRAMACLASS) = CLASNAME
                 END IF
 C
 C set force constant for current class,
@@ -1954,18 +1954,18 @@ C
      &                         HEAP(RAMAATOMPTR), 0)
                      ELSE IF (WD(1:4).EQ.'CLAS') THEN
                           CALL NEXTWD('Class name>')
-                          CLASSINDEX = 0
+                          CLASINDEX = 0
                           DO COUNT = 1, NRAMACLASSES
-                               IF (RAMACLASSNAMES(COUNT).EQ.CLASSNAME)
-     &                              CLASSINDEX = COUNT
+                               IF (RAMACLASSNAMES(COUNT).EQ.CLASNAME)
+     &                              CLASINDEX = COUNT
                           END DO
-                          IF (CLASSINDEX.EQ.0) THEN
+                          IF (CLASINDEX.EQ.0) THEN
                                CALL DSPERR('RAMA',
      &                              'unknown class. Using first.')
-                               CLASSINDEX = 1
+                               CLASINDEX = 1
                           END IF
                           CALL PRINTRAMAS(CUTOFF, HEAP(CALCRAMAPTR),
-     &                         HEAP(RAMAATOMPTR), CLASSINDEX)
+     &                         HEAP(RAMAATOMPTR), CLASINDEX)
                      ELSE
                           CALL DSPERR('RAMA',
      &                         'Expected ALL or CLASs.')
