diff --git a/src/modules/connection/driver/grpc/service/EvitaValueConverter.ts b/src/modules/connection/driver/grpc/service/EvitaValueConverter.ts
index d640478..0d1a0c3 100644
--- a/src/modules/connection/driver/grpc/service/EvitaValueConverter.ts
+++ b/src/modules/connection/driver/grpc/service/EvitaValueConverter.ts
@@ -216,8 +216,8 @@ export class EvitaValueConverter {
             throw new Error('DateTimeRange has undefined prop from and to')
         else
             return new DateTimeRange(
-                new OffsetDateTime(value.from!.timestamp!, value.from!.offset),
-                new OffsetDateTime(value.to!.timestamp!, value.to!.offset)
+                value.from != undefined ? new OffsetDateTime(value.from!.timestamp!, value.from!.offset) : undefined,
+                value.to != undefined ? new OffsetDateTime(value.to!.timestamp!, value.to!.offset) : undefined
             )
     }
 
@@ -368,14 +368,18 @@ export class EvitaValueConverter {
             ) {
                 dateTimeRange.push(
                     new DateTimeRange(
-                        new OffsetDateTime(
-                            grpcDateTimeRange.from!.timestamp!,
-                            grpcDateTimeRange.from!.offset
-                        ),
-                        new OffsetDateTime(
-                            grpcDateTimeRange.to!.timestamp!,
-                            grpcDateTimeRange.to!.offset
-                        )
+                        grpcDateTimeRange.from != undefined
+                            ? new OffsetDateTime(
+                                grpcDateTimeRange.from!.timestamp!,
+                                grpcDateTimeRange.from!.offset
+                            )
+                            : undefined,
+                        grpcDateTimeRange.to != undefined
+                            ? new OffsetDateTime(
+                                grpcDateTimeRange.to!.timestamp!,
+                                grpcDateTimeRange.to!.offset
+                            )
+                            : undefined
                     )
                 )
             }
@@ -529,15 +533,19 @@ export class EvitaValueConverter {
         to: GrpcOffsetDateTime | undefined,
         hasOffset: boolean
     ): boolean {
-        if (!from && !to) return false
-        else if (from && to && !from.timestamp && !to.timestamp) return false
-        else if (
+        if (!from && !to) {
+            return false
+        } else if (from && to && !from.timestamp && !to.timestamp) {
+            return false
+        } else if (
             hasOffset &&
             ((from && from.timestamp && !from.offset) ||
                 (to && to.timestamp && !to.offset))
-        )
+        ) {
             return false
-        else return true
+        } else {
+            return true
+        }
     }
 
     private checkNumberRangeValidity(
diff --git a/src/modules/connection/model/data-type/DateTimeRange.ts b/src/modules/connection/model/data-type/DateTimeRange.ts
index 9018991..0089da4 100644
--- a/src/modules/connection/model/data-type/DateTimeRange.ts
+++ b/src/modules/connection/model/data-type/DateTimeRange.ts
@@ -3,6 +3,8 @@ import { OffsetDateTime } from "./OffsetDateTime"
 import { PrettyPrintable } from "./PrettyPrintable"
 import { Range } from "./Range"
 
+const emptyRangeEndSymbol: any = '∞'
+
 export class DateTimeRange extends Range<OffsetDateTime> implements PrettyPrintable {
 
     constructor(from?: OffsetDateTime, to?: OffsetDateTime) {
@@ -14,7 +16,13 @@ export class DateTimeRange extends Range<OffsetDateTime> implements PrettyPrinta
             dateStyle: 'medium',
             timeStyle: 'long',
         })
-        return `[${offsetDateTimeFormatter.format(this.from?.timestamp?.toDate()) ?? '∞'},${offsetDateTimeFormatter.format(this.to?.timestamp?.toDate()) ?? '∞'}]`
+        const formattedFrom: string = this.from != undefined
+            ? offsetDateTimeFormatter.format(this.from.timestamp!.toDate())
+            : emptyRangeEndSymbol
+        const formattedTo: string = this.to != undefined
+            ? offsetDateTimeFormatter.format(this.to.timestamp!.toDate())
+            : emptyRangeEndSymbol
+        return `[${formattedFrom},${formattedTo}]`
     }
 
     static until(to: OffsetDateTime): DateTimeRange {
@@ -34,6 +42,6 @@ export class DateTimeRange extends Range<OffsetDateTime> implements PrettyPrinta
     }
 
     override toString():string{
-        return `[${this.from ?? '∞'},${this.to ?? '∞'}]`
+        return `[${this.from ?? emptyRangeEndSymbol},${this.to ?? emptyRangeEndSymbol}]`
     }
 }