diff --git a/include/math.h b/include/math.h
index fa11a710a6..035fd160ff 100644
--- a/include/math.h
+++ b/include/math.h
@@ -130,7 +130,10 @@ fabsf128 (_Float128 x)
 }
 # endif
 
-# if !(defined __FINITE_MATH_ONLY__ && __FINITE_MATH_ONLY__ > 0)
+
+/* NB: Internal tests don't have access to internal symbols.  */
+# if !IS_IN (testsuite_internal) \
+     && !(defined __FINITE_MATH_ONLY__ && __FINITE_MATH_ONLY__ > 0)
 #  ifndef NO_MATH_REDIRECT
 /* Declare some functions for use within GLIBC.  Compilers typically
    inline those functions as a single instruction.  Use an asm to
diff --git a/stdlib/Makefile b/stdlib/Makefile
index 9898cc5d8a..815d73ae6f 100644
--- a/stdlib/Makefile
+++ b/stdlib/Makefile
@@ -602,6 +602,8 @@ $(objpfx)bug-strtod2: $(libm)
 $(objpfx)tst-strtod-round: $(libm)
 $(objpfx)tst-tininess: $(libm)
 $(objpfx)tst-strtod-underflow: $(libm)
+$(objpfx)tst-strtod5: $(libm)
+$(objpfx)tst-strtod5i: $(libm)
 $(objpfx)tst-strtod6: $(libm)
 $(objpfx)tst-strtod-nan-locale: $(libm)
 $(objpfx)tst-strtod-nan-sign: $(libm)