diff --git a/astroquery/eso/core.py b/astroquery/eso/core.py
index 4612757c7e..3b12e7c333 100644
--- a/astroquery/eso/core.py
+++ b/astroquery/eso/core.py
@@ -808,7 +808,7 @@ def retrieve_data(self, datasets, continuation=False, destination=None,
                 href = link.attrs['href']
                 script = self._request("GET", href, cache=False)
                 fileLinks = re.findall(
-                    r'"(https://dataportal.eso.org/dataPortal/api/requests/.*)"',
+                    r'"(https://dataportal\.eso\.org/dataPortal/api/requests/.*)"',
                     script.text)
 
                 # urls with api/ require using Basic Authentication, though
diff --git a/astroquery/fermi/core.py b/astroquery/fermi/core.py
index 05a6c31362..fc6f33588a 100644
--- a/astroquery/fermi/core.py
+++ b/astroquery/fermi/core.py
@@ -22,7 +22,7 @@ class FermiLATClass(BaseQuery):
 
     request_url = conf.url
     result_url_re = re.compile('The results of your query may be found at '
-                               '<a href="(https://fermi.gsfc.nasa.gov/.*?)"')
+                               '<a href="(https://fermi\.gsfc\.nasa\.gov/.*?)"')
     TIMEOUT = conf.timeout
 
     def query_object_async(self, *args, **kwargs):
@@ -124,7 +124,7 @@ class GetFermilatDatafile:
     """
 
     fitsfile_re = re.compile('<a href="(.*?)">Available</a>')
-    fitsfile_re = re.compile('wget (https://fermi.gsfc.nasa.gov/FTP/fermi/data/lat/queries/[A-Za-z0-9_]*.fits)')
+    fitsfile_re = re.compile('wget (https://fermi\.gsfc\.nasa\.gov/FTP/fermi/data/lat/queries/[A-Za-z0-9_]*.fits)')
     # wget https://fermi.gsfc.nasa.gov/FTP/fermi/data/lat/queries/L1809182001077FA3883F37_SC00.fits
 
     TIMEOUT = conf.retrieval_timeout