diff --git a/NEWS.md b/NEWS.md
index 76645507b..47a92823a 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,5 +1,8 @@
 # devtools (development version)
 
+* `test_coverage_file()` now works when there is not a 1 to 1 correspondence
+  between test and source files (#2011).
+
 * New `dev_sitrep()` function to return information about your development
   environment and diagnose common problems. The former functions
   `dr_devtools()` and `dr_github()` have been deprecated. (#1970)
diff --git a/R/test.R b/R/test.R
index 3dd422d8f..c9a8c3606 100644
--- a/R/test.R
+++ b/R/test.R
@@ -264,6 +264,8 @@ test_coverage_file <- function(file = find_active_file(), filter = TRUE, show_re
     })
   )
 
+  filter <- isTRUE(filter) && all(file.exists(source_files))
+
   if (isTRUE(filter)) {
     coverage <- coverage[covr::display_name(coverage) %in% source_files]
   }
@@ -273,7 +275,11 @@ test_coverage_file <- function(file = find_active_file(), filter = TRUE, show_re
   attr(coverage, "package") <- pkg
 
   if (isTRUE(show_report)) {
-    covr::file_report(coverage)
+    if (isTRUE(filter)) {
+      covr::file_report(coverage)
+    } else {
+      covr::report(coverage)
+    }
   }
 
   invisible(coverage)