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-rw-r--r--guix/import/cran.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/guix/import/cran.scm b/guix/import/cran.scm
index e8caf080fd..dbc858cb84 100644
--- a/guix/import/cran.scm
+++ b/guix/import/cran.scm
@@ -361,7 +361,7 @@ empty list when the FIELD cannot be found."
(define (directory-needs-fortran? dir)
"Check if the directory DIR contains Fortran source files."
- (match (find-files dir "\\.f(90|95)?")
+ (match (find-files dir "\\.f(90|95)$")
(() #f)
(_ #t)))