diff --git a/modules/gmt/modgmt_gsfuncs.cpp b/modules/gmt/modgmt_gsfuncs.cpp
index cd2d646..32f5614 100644
--- a/modules/gmt/modgmt_gsfuncs.cpp
+++ b/modules/gmt/modgmt_gsfuncs.cpp
@@ -96,7 +96,7 @@ static int GhostRun(const std::string& opts, struct gs_runtime* r, std::string*
   ssize_t br;
   char buffer[4096];
 
-  pipe(pipefd);
+  if(0!=pipe(pipefd)) {*pret=-1; goto end;}
   wp.fd=pipefd[1];
 
   out->erase();
@@ -112,6 +112,7 @@ static int GhostRun(const std::string& opts, struct gs_runtime* r, std::string*
  }
  else pret=reinterpret_cast<int*>(gsworkthread(&wp));
 
+ end:
  return *pret;
 }
 
diff --git a/modules/gmt/modgmt_internals.cpp b/modules/gmt/modgmt_internals.cpp
index 732e887..7cc1744 100644
--- a/modules/gmt/modgmt_internals.cpp
+++ b/modules/gmt/modgmt_internals.cpp
@@ -45,7 +45,7 @@ int callgmtmodule(void *api, const char *module, struct GMT_OPTION *opts, std::s
  struct gmtworkthreadpars p;
  int *pret;
 
- pipe(pipefd);
+ if(0!=pipe(pipefd)) {*pret=-1; goto end;}
  p.api=api;
  p.module=module;
  p.opts=opts;
@@ -59,6 +59,7 @@ int callgmtmodule(void *api, const char *module, struct GMT_OPTION *opts, std::s
  res->shrink_to_fit();
  pthread_join(wthr,reinterpret_cast<void**>(&pret));
 
+ end:
  return *pret;
 }
 // Overloaded variant with opts as std::string
diff --git a/modules/gmt/modgmt_map.cpp b/modules/gmt/modgmt_map.cpp
index d35f064..cba9352 100644
--- a/modules/gmt/modgmt_map.cpp
+++ b/modules/gmt/modgmt_map.cpp
@@ -298,9 +298,16 @@ const ObjectBase* GMT_Convert2PNG(const ObjectList* input)
   if(taa.Exist()) aats=taa;
   if(gaa.Exist()) aags=gaa;
   tolower(aags); tolower(aats);
-  if("none" ==aags || "no"==aags || "n"==aags) aag=1; if("none" ==aats || "no"==aats || "n"==aats) aat=1;
-  if("small"==aags || "s" ==aags             ) aag=2; if("small"==aats || "s" ==aats             ) aat=2;
-  if("full" ==aags || "f" ==aags             ) aag=4; if("full" ==aats || "f" ==aats             ) aat=4;
+
+  if("none" ==aags || "no"==aags || "n"==aags) aag=1;
+  if("none" ==aats || "no"==aats || "n"==aats) aat=1;
+
+  if("small"==aags || "s" ==aags             ) aag=2;
+  if("small"==aats || "s" ==aats             ) aat=2;
+
+  if("full" ==aags || "f" ==aags             ) aag=4;
+  if("full" ==aats || "f" ==aats             ) aat=4;
+
   if(0==aat) {err="Incorrect value for text antialiasing: "+aats; goto fail;}
   if(0==aag) {err="Incorrect value for graphics antialiasing: "+aags; goto fail;}
  }
@@ -408,9 +415,16 @@ const ObjectBase* GMT_Convert2JPG(const ObjectList* input)
   if(taa.Exist()) aats=taa;
   if(gaa.Exist()) aags=gaa;
   tolower(aags); tolower(aats);
-  if("none" ==aags || "no"==aags || "n"==aags) aag=1; if("none" ==aats || "no"==aats || "n"==aats) aat=1;
-  if("small"==aags || "s" ==aags             ) aag=2; if("small"==aats || "s" ==aats             ) aat=2;
-  if("full" ==aags || "f" ==aags             ) aag=4; if("full" ==aats || "f" ==aats             ) aat=4;
+
+  if("none" ==aags || "no"==aags || "n"==aags) aag=1;
+  if("none" ==aats || "no"==aats || "n"==aats) aat=1;
+
+  if("small"==aags || "s" ==aags             ) aag=2;
+  if("small"==aats || "s" ==aats             ) aat=2;
+
+  if("full" ==aags || "f" ==aags             ) aag=4; 
+  if("full" ==aats || "f" ==aats             ) aat=4;
+
   if(0==aat) {err="Incorrect value for text antialiasing: "+aats; goto fail;}
   if(0==aag) {err="Incorrect value for graphics antialiasing: "+aags; goto fail;}
  }