diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 00000000..f5fc0e11
Binary files /dev/null and b/.DS_Store differ
diff --git a/src/power_divergence.jl b/src/power_divergence.jl
index baa2cbf3..eeabdc87 100644
--- a/src/power_divergence.jl
+++ b/src/power_divergence.jl
@@ -319,6 +319,13 @@ function PowerDivergenceTest(x::AbstractMatrix{T}; lambda::U=1.0, theta0::Vector
             stat += x[i] * (log(x[i]) - log(xhat[i]))
         end
         stat *= 2
+    #yates correction
+    elseif lambda==1 && df==1
+        for i in 1:length(x)
+            num = abs(x[i] - xhat[i]) - 0.5
+            den = sqrt(xhat[i])
+            stat += (num / den)^2
+        end
     elseif lambda == -1
         for i in 1:length(x)
             stat += xhat[i] * (log(xhat[i]) - log(x[i]))
diff --git a/test/power_divergence.jl b/test/power_divergence.jl
index 6c058b08..b41d2531 100644
--- a/test/power_divergence.jl
+++ b/test/power_divergence.jl
@@ -143,6 +143,11 @@ testname(m)
 pvalue(m)
 show(IOBuffer(), m)
 
+#Yates's correction
+mat = [8 404; 12 212]
+m = PowerDivergenceTest(mat, lambda=1.0)
+@test pvalue(m) ≈ 0.034041225309689796
+
 m = ChisqTest(d)
 m = MultinomialLRTest(d)