diff --git a/c/src/lib/libbsp/sh/gensh1/make/custom/gensh1-testsuite.tcfg b/c/src/lib/libbsp/sh/gensh1/make/custom/gensh1-testsuite.tcfg
index 765c8e1c9a..8612613b58 100644
--- a/c/src/lib/libbsp/sh/gensh1/make/custom/gensh1-testsuite.tcfg
+++ b/c/src/lib/libbsp/sh/gensh1/make/custom/gensh1-testsuite.tcfg
@@ -4,6 +4,7 @@
 # Format is one line per test that is _NOT_ built.
 #
 
+fileio
 fsdosfsname01
 iostream
 utf8proc01
diff --git a/c/src/lib/libbsp/sh/gensh2/make/custom/gensh2-testsuite.tcfg b/c/src/lib/libbsp/sh/gensh2/make/custom/gensh2-testsuite.tcfg
index c54b420bb8..2db5955ef4 100644
--- a/c/src/lib/libbsp/sh/gensh2/make/custom/gensh2-testsuite.tcfg
+++ b/c/src/lib/libbsp/sh/gensh2/make/custom/gensh2-testsuite.tcfg
@@ -4,6 +4,7 @@
 # Format is one line per test that is _NOT_ built.
 #
 
+fileio
 fsdosfsname01
 iostream
 utf8proc01