diff --git a/libavcodec/arm/synth_filter_neon.S b/libavcodec/arm/synth_filter_neon.S
index c168d738f1..a7c23df02b 100644
--- a/libavcodec/arm/synth_filter_neon.S
+++ b/libavcodec/arm/synth_filter_neon.S
@@ -36,7 +36,7 @@ function ff_synth_filter_float_neon, export=1
         mov             r9,  r1                 @ synth_buf
 
 VFP     vpush           {d0}
-        bl              ff_imdct_half_neon
+        bl              X(ff_imdct_half_neon)
 VFP     vpop            {d0}
         pop             {r3}