diff --git a/indra/cmake/WebRTC.cmake b/indra/cmake/WebRTC.cmake
index c1e5df8b9dd5a042fc09ab48cbc2cd5ed0e0c83c..fc664b75bf486842fd307b825b52c7bd1fbeffb4 100644
--- a/indra/cmake/WebRTC.cmake
+++ b/indra/cmake/WebRTC.cmake
@@ -7,7 +7,7 @@ if (WINDOWS)
         FetchContent_Declare(
               webrtc
               URL https://webrtc-build-releases.s3.us-west-2.amazonaws.com/webrtc.windows_x86.tar.bz2
-              URL_HASH MD5=0d55e58efceed3fb48085a5f0c58881c
+              URL_HASH "MD5=0d55e58efceed3fb48085a5f0c58881c"
               FIND_PACKAGE_ARGS NAMES webrtc
               DOWNLOAD_EXTRACT_TIMESTAMP TRUE
               DOWNLOAD_DIR "${LIBS_PREBUILT_DIR}/webrtc/"
@@ -16,7 +16,7 @@ if (WINDOWS)
         FetchContent_Declare(
               webrtc
               URL https://webrtc-build-releases.s3.us-west-2.amazonaws.com/webrtc.windows_x86_64.tar.bz2
-              URL_HASH MD5=dfb692562770dc8c877ebfe4302e2881
+              URL_HASH "MD5=dfb692562770dc8c877ebfe4302e2881"
               FIND_PACKAGE_ARGS NAMES webrtc
               DOWNLOAD_EXTRACT_TIMESTAMP TRUE
               DOWNLOAD_DIR "${LIBS_PREBUILT_DIR}/webrtc/"
@@ -26,7 +26,7 @@ elseif (DARWIN)
     FetchContent_Declare(
       webrtc
       URL https://webrtc-build-releases.s3.us-west-2.amazonaws.com/webrtc.macos_x86_64.tar.bz2
-      URL_HASH MD5=cfbcac7da897a862f9791ea29330b814
+      URL_HASH "MD5=cfbcac7da897a862f9791ea29330b814"
       FIND_PACKAGE_ARGS NAMES webrtc
       DOWNLOAD_EXTRACT_TIMESTAMP TRUE
       DOWNLOAD_DIR "${LIBS_PREBUILT_DIR}/webrtc/"