diff --git a/Libraries/Network/RCTNetworking.mm b/Libraries/Network/RCTNetworking.mm
index 70d2ede18e45ba..a8aa11a62849cf 100644
--- a/Libraries/Network/RCTNetworking.mm
+++ b/Libraries/Network/RCTNetworking.mm
@@ -49,7 +49,7 @@ @implementation RCTHTTPFormDataHelper
 static NSString *RCTGenerateFormBoundary()
 {
   const size_t boundaryLength = 70;
-  const char *boundaryChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_./";
+  const char *boundaryChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_.";
 
   char *bytes = (char*)malloc(boundaryLength);
   size_t charCount = strlen(boundaryChars);