diff --git a/src/OSC.jl b/src/OSC.jl
index 4816d8b..e9525ca 100644
--- a/src/OSC.jl
+++ b/src/OSC.jl
@@ -57,8 +57,8 @@ has_reserved(typeChar::Char) = typeChar in "isbfhtdSrmc"
 nreserved(args::ASCIIString) = sum(map(has_reserved, collect(args)))
 
 function argType(msg::OscMsg, nargument::Int)#::Char
-    @assert(nargument < narguments(msg));
-    return strip_args(names(msg))[nargument+1]
+    @assert(nargument > 0 && nargument <= narguments(msg));
+    return strip_args(names(msg))[nargument]
 end
 
 align(pos) = pos+(4-(pos-1)%4)
@@ -82,7 +82,7 @@ function arg_off(msg::OscMsg, idx::Int)#::Int
     #ignore any leading '[' or ']'
     while(args[argc] in "[]") argc += 1 end
 
-    while(idx != 0)
+    while(idx != 1)
         bundle_length::Uint32 = 0;
         arg = args[argc]
         argc += 1
@@ -309,8 +309,8 @@ function showField(io::IO, msg::OscMsg, arg_id)
     'F' false; 'N' Nothing]
     dict = Dict{Char, Any}(map[:,1][:],map[:,2][:])
     dict['I'] = Inf
-    typeChar::Char = argType(msg, arg_id-1)
-    value = msg[arg_id-1]
+    typeChar::Char = argType(msg, arg_id)
+    value = msg[arg_id]
     if(issubtype(typeof(value), Array))
         value = value'
     end
diff --git a/test/runtests.jl b/test/runtests.jl
index 9e09404..3b4746c 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -61,21 +61,21 @@ function test_it_fat()
     #println(string(map(x->(isprint(char(x&0x7f)) ? string(char(x&0x7f)," ") : ". "), buffer[1:len])...))
     #println("argument string is=", rtosc_argument_string(buffer))
 
-    @test msg[0]  == i
-    @test msg[1]  == f
-    @test msg[2]  == s
-    @test OSC.stringify(msg[3]) == b
-    @test msg[4]  == h
-    @test msg[5]  == t
-    @test msg[6]  == d
-    @test msg[7]  == S
-    @test msg[8]  == c
-    @test msg[9]  == r
-    @test msg[10] == m
-    @test OSC.argType(msg,11) == 'T'
-    @test OSC.argType(msg,12) == 'F'
-    @test OSC.argType(msg,13) == 'N'
-    @test OSC.argType(msg,14) == 'I'
+    @test msg[1]  == i
+    @test msg[2]  == f
+    @test msg[3]  == s
+    @test OSC.stringify(msg[4]) == b
+    @test msg[5]  == h
+    @test msg[6]  == t
+    @test msg[7]  == d
+    @test msg[8]  == S
+    @test msg[9]  == c
+    @test msg[10]  == r
+    @test msg[11] == m
+    @test OSC.argType(msg,12) == 'T'
+    @test OSC.argType(msg,13) == 'F'
+    @test OSC.argType(msg,14) == 'N'
+    @test OSC.argType(msg,15) == 'I'
 end
 
 function test_it_osc_spec()