diff --git a/gnu/packages/radio.scm b/gnu/packages/radio.scm
index 32dc0f8aca..487f5cea6e 100644
--- a/gnu/packages/radio.scm
+++ b/gnu/packages/radio.scm
@@ -1783,16 +1783,16 @@ Compatible hardware/software:
                 (string-append "documentation.path = "
                                (assoc-ref outputs "out")
                                "/share/man/man1"))
-               (("/usr/include/pulse/")
-                (search-input-directory inputs "include/pulse"))
+               (("/usr/include/pulse")
+                (search-input-directory inputs "/include/pulse"))
                (("/usr/include/sndfile\\.h")
                 (search-input-file inputs "/include/sndfile.h"))
-               (("/usr/include/opus/")
-                (search-input-directory inputs "include/opus"))
-               (("/usr/include/speex/")
-                (search-input-directory inputs "include/speex"))
-               (("/usr/include/qwt/")
-                (search-input-directory inputs "include/qwt"))
+               (("/usr/include/opus")
+                (search-input-directory inputs "/include/opus"))
+               (("/usr/include/speex")
+                (search-input-directory inputs "/include/speex"))
+               (("/usr/include/qwt")
+                (search-input-directory inputs "/include/qwt"))
                (("\\$\\$OUT_PWD/include/neaacdec\\.h")
                 (search-input-file inputs "/include/neaacdec.h")))))
          (replace 'configure