diff --git a/test/dl/test_base.rb b/test/dl/test_base.rb
index 90d44e6..7b1abe2 100644
--- a/test/dl/test_base.rb
+++ b/test/dl/test_base.rb
@@ -33,6 +33,9 @@ when /darwin/
 when /kfreebsd/
   libc_so = "/lib/libc.so.0.1"
   libm_so = "/lib/libm.so.1"
+when /gnu/
+  libc_so = "/lib/libc.so.0.3"
+  libm_so = "/lib/libm.so.6"
 when /bsd|dragonfly/
   libc_so = "/usr/lib/libc.so"
   libm_so = "/usr/lib/libm.so"
diff --git a/test/fiddle/helper.rb b/test/fiddle/helper.rb
index 209dedb..ed1be15 100644
--- a/test/fiddle/helper.rb
+++ b/test/fiddle/helper.rb
@@ -34,6 +34,9 @@ when /darwin/
 when /kfreebsd/
   libc_so = "/lib/libc.so.0.1"
   libm_so = "/lib/libm.so.1"
+when /gnu/
+  libc_so = "/lib/libc.so.0.3"
+  libm_so = "/lib/libm.so.6"
 when /bsd|dragonfly/
   libc_so = "/usr/lib/libc.so"
   libm_so = "/usr/lib/libm.so"