diff --git a/src/compiler/os.cc b/src/compiler/os.cc
index b955c02..fafdc25 100644
--- a/src/compiler/os.cc
+++ b/src/compiler/os.cc
@@ -140,7 +140,7 @@ int os::prog_exec(std::string exe, std::vector<std::string> &args)
 
     // Ignore INT and QUIT signals in the parent process:
     sigset_t oldmask, newmask;
-    struct sigaction sa = {SIG_IGN, 0}, oldint, oldquit;
+    struct sigaction sa = {{SIG_IGN}, 0}, oldint, oldquit;
     sigaction(SIGINT, &sa, &oldint);
     sigaction(SIGQUIT, &sa, &oldquit);
 
@@ -154,7 +154,7 @@ int os::prog_exec(std::string exe, std::vector<std::string> &args)
     if(pid == 0)
     {
         // Child, reset INT, QUIT and CHLD signals to default
-        struct sigaction sa = {SIG_DFL, 0};
+        struct sigaction sa = {{SIG_DFL}, 0};
         sigaction(SIGINT, &sa, nullptr);
         sigaction(SIGQUIT, &sa, nullptr);
         sigprocmask(SIG_SETMASK, &oldmask, nullptr);
diff --git a/src/compiler/parser.h b/src/compiler/parser.h
index 14859b8..dbc1a34 100644
--- a/src/compiler/parser.h
+++ b/src/compiler/parser.h
@@ -472,7 +472,7 @@ class parse
             {
                 if(c == '"')
                     expand.stext += "\"\"";
-                else if(c == 155)
+                else if((unsigned) c == 155)
                 {
                     in = false;
                     expand.stext += std::string("\"$") + hexd(c >> 4) + hexd(c);
@@ -482,7 +482,7 @@ class parse
             }
             else
             {
-                if(c == 155 || c == '"')
+                if((unsigned) c == 155 || c == '"')
                     expand.stext += std::string("$") + hexd(c >> 4) + hexd(c);
                 else
                 {