diff --git a/Args.cpp b/Args.cpp
index 4b13f93..388cca5 100644
--- a/Args.cpp
+++ b/Args.cpp
@@ -90,9 +90,9 @@ TInt RArgs::open(const char *a_pccTemplate, TInt a_iNumOptions, const char *a_pc
 
 				for (Index = 1; Index < a_iArgC; ++Index)
 				{
-					if (strstr(a_pccArgV[Index], " ") > NULL) strcat(m_pcArgumentBuffer, "\"");
+					if (strstr(a_pccArgV[Index], " ") != NULL) strcat(m_pcArgumentBuffer, "\"");
 					strcat(m_pcArgumentBuffer, a_pccArgV[Index]);
-					if (strstr(a_pccArgV[Index], " ") > NULL) strcat(m_pcArgumentBuffer, "\"");
+					if (strstr(a_pccArgV[Index], " ") != NULL) strcat(m_pcArgumentBuffer, "\"");
 
 					/* If this is not the last argument, append a space to it */
 
diff --git a/OS4Support.h b/OS4Support.h
index 28aa431..c1cd1d6 100644
--- a/OS4Support.h
+++ b/OS4Support.h
@@ -50,10 +50,16 @@ void RefreshSetGadgetAttrs(struct Gadget *a_gadget, struct Window *a_window, str
 
 #ifdef __amigaos4__
 
-/* Functions renamed in OS4 but still compatible with their OS3 equivalents */
+/* Functions pointlessly renamed in OS4 but still compatible with their OS3 equivalents */
 
 #define GetCurrentDirName(buffer, length) GetCliCurrentDirName(buffer, length)
 
+#ifndef Seek
+
+#define Seek(file, position, mode) ChangeFilePosition(file, position, mode)
+
+#endif /* ! Seek */
+
 #endif /* __amigaos4__ */
 
 #endif /* ! OS4SUPPORT_H */