diff --git a/libm/Android.mk b/libm/Android.mk
index abe0722..1c3d393 100644
--- a/libm/Android.mk
+++ b/libm/Android.mk
@@ -177,7 +177,9 @@
     upstream-freebsd/lib/msun/src/w_drem.c \
     upstream-freebsd/lib/msun/src/w_dremf.c \
 
-libm_common_src_files += fake_long_double.c
+libm_common_src_files += \
+    fake_long_double.c \
+    upstream-freebsd/lib/msun/src/s_modfl.c \
 
 # TODO: on Android, "long double" is "double".
 #    upstream-freebsd/lib/msun/src/e_acosl.c \
@@ -204,7 +206,6 @@
 #    upstream-freebsd/lib/msun/src/s_logbl.c \
 #    upstream-freebsd/lib/msun/src/s_lrintl.c \
 #    upstream-freebsd/lib/msun/src/s_lroundl.c \
-#    upstream-freebsd/lib/msun/src/s_modfl.c \
 #    upstream-freebsd/lib/msun/src/s_nextafterl.c \
 #    upstream-freebsd/lib/msun/src/s_nexttoward.c \
 #    upstream-freebsd/lib/msun/src/s_remquol.c \
diff --git a/libm/fake_long_double.c b/libm/fake_long_double.c
index 2a3e420..751911a 100644
--- a/libm/fake_long_double.c
+++ b/libm/fake_long_double.c
@@ -72,7 +72,6 @@
 long lrintl(long double a1) { return lrint(a1); }
 long long llroundl(long double a1) { return llround(a1); }
 long lroundl(long double a1) { return lround(a1); }
-long double modfl(long double a1, long double* a2) { return modf(a1, (double*) a2); }
 long double nanl(const char* a1) { return nan(a1); }
 long double nextafterl(long double a1, long double a2) { return nextafter(a1, a2); }
 long double powl(long double a1, long double a2) { return pow(a1, a2); }