diff --git a/src/sdk/utils/math.test.ts b/src/sdk/utils/math.test.ts
index d153eaa5..66f77c00 100644
--- a/src/sdk/utils/math.test.ts
+++ b/src/sdk/utils/math.test.ts
@@ -150,14 +150,24 @@ describe("computeAPR", () => {
       expected: 6.016763389193883,
     },
     {
-      name: "NaN",
+      name: "real - no stake",
+      in: {
+        myStake: 0,
+        totalStaked: 10_000_000,
+        params,
+        period: 0,
+      },
+      expected: 6.016769405957272,
+    },
+    {
+      name: "infinity",
       in: {
         myStake: 0,
         totalStaked: 0,
         params,
         period: 0,
       },
-      expected: NaN,
+      expected: Infinity,
     },
   ]
 
diff --git a/src/sdk/utils/math.ts b/src/sdk/utils/math.ts
index d6e8bd3c..460e92d1 100644
--- a/src/sdk/utils/math.ts
+++ b/src/sdk/utils/math.ts
@@ -21,7 +21,7 @@ export const calculateEpochMintProvision = (
 
   return polynomialValue.lt(0) ||
     params.epochsPerPeriod.eq(0) ||
-    period.gt(params.maxPeriod.toString()).toString()
+    period.gt(params.maxPeriod.toString())
     ? BigNumber(0)
     : polynomialValue
 }