diff --git a/src/libutil/current-process.cc b/src/libutil/current-process.cc
index c88013b3c..b252bd4d0 100644
--- a/src/libutil/current-process.cc
+++ b/src/libutil/current-process.cc
@@ -60,14 +60,14 @@ unsigned int getMaxCPU()
 
 
 #ifndef _WIN32
-rlim_t savedStackSize = 0;
+size_t savedStackSize = 0;
 
-void setStackSize(rlim_t stackSize)
+void setStackSize(size_t stackSize)
 {
     struct rlimit limit;
     if (getrlimit(RLIMIT_STACK, &limit) == 0 && limit.rlim_cur < stackSize) {
         savedStackSize = limit.rlim_cur;
-        limit.rlim_cur = std::min(stackSize, limit.rlim_max);
+        limit.rlim_cur = std::min(static_cast<rlim_t>(stackSize), limit.rlim_max);
         if (setrlimit(RLIMIT_STACK, &limit) != 0) {
             logger->log(
                 lvlError,
diff --git a/src/libutil/current-process.hh b/src/libutil/current-process.hh
index a5adb70cf..8db4ada0d 100644
--- a/src/libutil/current-process.hh
+++ b/src/libutil/current-process.hh
@@ -21,7 +21,7 @@ unsigned int getMaxCPU();
 /**
  * Change the stack size.
  */
-void setStackSize(rlim_t stackSize);
+void setStackSize(size_t stackSize);
 #endif
 
 /**