diff --git a/e2e/infrastructure/MosaicHttp.spec.ts b/e2e/infrastructure/MosaicHttp.spec.ts
index 761065e4bd..37717636aa 100644
--- a/e2e/infrastructure/MosaicHttp.spec.ts
+++ b/e2e/infrastructure/MosaicHttp.spec.ts
@@ -182,19 +182,6 @@ describe('MosaicHttp', () => {
         });
     });
 
-    describe('getMosaics', () => {
-        it('should return mosaics given array of mosaicIds', (done) => {
-            mosaicHttp.getMosaics([mosaicId])
-                .subscribe((mosaicInfos) => {
-                    expect(mosaicInfos[0].height.lower).not.to.be.null;
-                    expect(mosaicInfos[0].divisibility).to.be.equal(3);
-                    expect(mosaicInfos[0].isSupplyMutable()).to.be.equal(true);
-                    expect(mosaicInfos[0].isTransferable()).to.be.equal(true);
-                    done();
-                });
-        });
-    });
-
     describe('getMosaicsNames', () => {
         it('should call getMosaicsNames successfully', (done) => {
             mosaicHttp.getMosaicsNames([mosaicId]).subscribe((mosaicNames) => {
diff --git a/src/core/format/Utilities.ts b/src/core/format/Utilities.ts
index 90a2180655..332433afff 100644
--- a/src/core/format/Utilities.ts
+++ b/src/core/format/Utilities.ts
@@ -168,8 +168,8 @@ export const decodeChar = (c) => {
 };
 
 export const decodeBlock = (input, inputOffset, output, outputOffset) => {
-    const bytes = new Uint8Array(this.Encoded_Block_Size);
-    for (let i = 0; i < this.Encoded_Block_Size; ++i) {
+    const bytes = new Uint8Array(Encoded_Block_Size);
+    for (let i = 0; i < Encoded_Block_Size; ++i) {
         bytes[i] = decodeChar(input[inputOffset + i]);
     }
 
diff --git a/src/infrastructure/MosaicHttp.ts b/src/infrastructure/MosaicHttp.ts
index 104aee210b..b86fd4b730 100644
--- a/src/infrastructure/MosaicHttp.ts
+++ b/src/infrastructure/MosaicHttp.ts
@@ -75,7 +75,7 @@ export class MosaicHttp extends Http implements MosaicRepository {
                             divisibility = mosaicInfoDTO.mosaic.properties[MosaicPropertyType.Divisibility].value;
                         }
                         if (mosaicInfoDTO.mosaic.properties[MosaicPropertyType.Duration].value) {
-                            duration = mosaicInfoDTO.mosaic.properties[MosaicPropertyType.Divisibility].value;
+                            duration = mosaicInfoDTO.mosaic.properties[MosaicPropertyType.Duration].value;
                         }
                         return new MosaicInfo(
                             mosaicInfoDTO.meta.id,