diff --git a/tests/performance/matmul1_ravi.lua b/tests/performance/matmul1_ravi.lua
index 9f9fcf8..775ea73 100644
--- a/tests/performance/matmul1_ravi.lua
+++ b/tests/performance/matmul1_ravi.lua
@@ -3,7 +3,7 @@
 matrix = {}
 
 function matrix.T(a: table)
-	local m: integer, n: integer, x: table = #a, #a[1], {};
+	local m: integer, n: integer, x: table = #a, @integer(#a[1]), {};
 	for i = 1, n do
 		local xi: number[] = table.numarray(n, 0.0)
 		x[i] = xi
@@ -14,7 +14,7 @@ end
 
 function matrix.mul(a: table, b: table)
 	assert(@integer(#a[1]) == #b);
-	local m: integer, n: integer, p: integer, x: table = #a, #a[1], #b[1], {};
+	local m: integer, n: integer, p: integer, x: table = #a, @integer(#a[1]), @integer(#b[1]), {};
 	local c: table = matrix.T(b); -- transpose for efficiency
 	for i = 1, m do
 		local xi: number[] = table.numarray(p, 0.0)