diff --git a/src/arrays.jl b/src/arrays.jl
index 9062e4a..97d24d9 100644
--- a/src/arrays.jl
+++ b/src/arrays.jl
@@ -34,7 +34,7 @@ function signal(x::AbstractArray{<:Any,N},::IsSignal,
 end
 function signal(x::AxisArray,::IsSignal,fs::Union{Missing,Number}=missing)
     if !isconsistent(fs,samplerate(x))
-        error("Signal expected to have sample rate of $fs Hz.")
+        error("Signal expected to have sample rate of $(inHz(fs)) Hz.")
     else
         x
     end
diff --git a/src/signal.jl b/src/signal.jl
index ec7b737..4984ae7 100644
--- a/src/signal.jl
+++ b/src/signal.jl
@@ -131,7 +131,7 @@ function signal(x,::IsSignal,fs)
     if ismissing(samplerate(x))
         tosamplerate(x,fs)
     elseif !isconsistent(fs,samplerate(x))
-        error("Signal expected to have sample rate of $fs Hz.")
+        error("Signal expected to have sample rate of $(inHz(fs)) Hz.")
     else
         x
     end