diff --git a/frontend/src/components/unification/shared/frame-components/SemanticsSchemataComponent.vue b/frontend/src/components/unification/shared/frame-components/SemanticsSchemataComponent.vue
index fef1136536a17280a7f98a48bace236ca774f4a7..d54bb792b5a42815bc0bd2041b812ddf0afdff7a 100644
--- a/frontend/src/components/unification/shared/frame-components/SemanticsSchemataComponent.vue
+++ b/frontend/src/components/unification/shared/frame-components/SemanticsSchemataComponent.vue
@@ -57,8 +57,10 @@
 
                     argumentIdSet.forEach(argumentId => {
                         const argument = this.frame.arguments.find(arg => argumentId.endsWith(arg.argument_id));
-                        const role = argument.role;
-                        styles.push(role);
+                        if(argument) {
+                            const role = argument.role;
+                            styles.push(role);
+                        }
                     });
 
                 }
@@ -116,7 +118,7 @@
                 <div class="mb-1 sticky-top"><h5 class="bg-dark text-light p-1">{{subentry.str}}</h5></div>
                 <template v-for="schema in subentry.schemata">
                     <div class="schema mb-3"
-                         v-if="this.frame && alternations[this.frame.id][schema.id]"
+                         v-if="this.frame && alternations[this.frame.id] && alternations[this.frame.id][schema.id]"
                          @mouseenter="schema.hover=true"
                          @mouseleave="schema.hover=false"
                          @click="selectSchema(schema)"
diff --git a/unifier/views.py b/unifier/views.py
index 307eb2027bcc376822f78c3f6d554e14285b7c45..06fba97ab97b75aa478885e6de076fc85c8248d6 100644
--- a/unifier/views.py
+++ b/unifier/views.py
@@ -1106,19 +1106,24 @@ def attach_lu_to_unified_frame(request):
             slowal_frame_arguments = list(frame.arguments.all())
             unified_frame_arguments = list(unified_frame.unified_arguments.all())
             slowal_frame_argument_cnt = len(slowal_frame_arguments)
+            col_cnt = 0
             for ind in range(slowal_frame_argument_cnt):
-                if ind >= len(unified_frame_arguments):
-                    # create additional argument in unified frame
-                    unified_frame_argument = UnifiedFrameArgument(unified_frame=unified_frame)
-                    UnifiedFrameArgument.save(unified_frame_argument)
-                else:
-                    unified_frame_argument = unified_frame_arguments[ind]
-
-                unified_frame_argument_slowal_frame_mapping = \
-                    UnifiedFrameArgumentSlowalFrameMapping(unified_frame_mapping=mapping,
-                                                           unified_agrument=unified_frame_argument,
-                                                           slowal_agrument=slowal_frame_arguments[ind])
-                UnifiedFrameArgumentSlowalFrameMapping.save(unified_frame_argument_slowal_frame_mapping)
+                slowal_agrument = slowal_frame_arguments[ind]
+                if slowal_agrument.role.role.role != 'Lemma':
+                    if col_cnt >= len(unified_frame_arguments):
+                        # create additional argument in unified frame
+                        unified_frame_argument = UnifiedFrameArgument(unified_frame=unified_frame)
+                        UnifiedFrameArgument.save(unified_frame_argument)
+                    else:
+                        unified_frame_argument = unified_frame_arguments[col_cnt]
+
+                    unified_frame_argument_slowal_frame_mapping = \
+                        UnifiedFrameArgumentSlowalFrameMapping(unified_frame_mapping=mapping,
+                                                               unified_agrument=unified_frame_argument,
+                                                               slowal_agrument=slowal_agrument)
+                    UnifiedFrameArgumentSlowalFrameMapping.save(unified_frame_argument_slowal_frame_mapping)
+
+                    col_cnt = col_cnt + 1
 
         for frame in frames:
             http = urllib3.PoolManager()