diff --git a/srcpkgs/qt5-webengine/patches/0090-qtwebengine-ppc64.patch b/srcpkgs/qt5-webengine/patches/0090-qtwebengine-ppc64.patch
index e0d1e4228a8..21957425e31 100644
--- a/srcpkgs/qt5-webengine/patches/0090-qtwebengine-ppc64.patch
+++ b/srcpkgs/qt5-webengine/patches/0090-qtwebengine-ppc64.patch
@@ -240,20 +240,16 @@ index d9789a713..6ff40c9b0 100644
  // Ubuntu's version of glibc has a race condition in sem_post that can cause
  // it to call futex(2) with bogus op arguments. To workaround this, we need
  // to allow those futex(2) calls to fail with EINVAL, instead of crashing the
-@@ -246,9 +261,11 @@ ResultExpr RestrictFcntlCommands() {
-   // operator.
-   // Glibc overrides the kernel's O_LARGEFILE value. Account for this.
+@@ -259,6 +274,8 @@ ResultExpr RestrictFcntlCommands() {
    uint64_t kOLargeFileFlag = O_LARGEFILE;
--  if (IsArchitectureX86_64() || IsArchitectureI386() || IsArchitectureMips())
-+  if (IsArchitectureX86_64() || IsArchitectureI386() || IsArchitectureMips() \
-+      || IsArchitecturePPC64())
+   if (IsArchitectureX86_64() || IsArchitectureI386() || IsArchitectureMips())
      kOLargeFileFlag = 0100000;
++  else if (IsArchitecturePPC64())
++    kOLargeFileFlag = 0200000;
  
-+
    const Arg<int> cmd(1);
    const Arg<long> long_arg(2);
- 
-@@ -262,14 +279,23 @@ ResultExpr RestrictFcntlCommands() {
+@@ -273,14 +290,23 @@ ResultExpr RestrictFcntlCommands() {
                F_SETLKW,
                F_GETLK,
                F_DUPFD,
@@ -280,7 +276,7 @@ index d9789a713..6ff40c9b0 100644
  ResultExpr RestrictSocketcallCommand() {
    // Unfortunately, we are unable to restrict the first parameter to
    // socketpair(2). Whilst initially sounding bad, it's noteworthy that very
-@@ -409,7 +435,7 @@ ResultExpr RestrictPrlimit(pid_t target_pid) {
+@@ -420,7 +446,7 @@ ResultExpr RestrictPrlimit(pid_t target_pid) {
  ResultExpr RestrictPtrace() {
    const Arg<int> request(0);
    return Switch(request).CASES((