diff --git a/src/app/gene/services/gene.service.ts b/src/app/gene/services/gene.service.ts
index a8445d07..13325969 100644
--- a/src/app/gene/services/gene.service.ts
+++ b/src/app/gene/services/gene.service.ts
@@ -77,7 +77,8 @@ export class GeneService extends HttpService {
   // fetches source specific details for the given gene
   getGeneDetails(gene: string, source: string): Observable<any> {
     const request = this._appConfig.getServerRequest(source, 'geneLinks');
-    const makeUrl = (url: string) => url + gene + '/json';
+    //TODO: make this more configurable via template substitution
+    const makeUrl = (url: string) => url + gene;
     return this._makeHttpRequest<any>(request, {}, makeUrl);
   }
 
diff --git a/src/app/gene/services/region.service.ts b/src/app/gene/services/region.service.ts
index d55ca71e..692bceb2 100644
--- a/src/app/gene/services/region.service.ts
+++ b/src/app/gene/services/region.service.ts
@@ -64,7 +64,8 @@ export class RegionService extends HttpService {
   // fetches source specific details for the given region
   getRegionDetails(chromosome: string, start: number, end: number, source: string): Observable<any> {
     const request = this._appConfig.getServerRequest(source, 'regionLinks');
-    const makeUrl = (url: string) => url + chromosome + '&start=' + start + '&end=' + end ;
+    //TODO: make this more configurable via template-based substitution
+    const makeUrl = (url: string) => url + chromosome + ':' + start + '-' + end ;
     return this._makeHttpRequest<any>(request, {}, makeUrl);
   }