diff --git a/CodeGenV2_WIP/codegenv2.c b/CodeGenV2_WIP/codegenv2.c
index e6460a8..19807ae 100644
--- a/CodeGenV2_WIP/codegenv2.c
+++ b/CodeGenV2_WIP/codegenv2.c
@@ -34,7 +34,7 @@ struct Instr_Def* InstrHash[16384];
 static unsigned int hash(const uint_8* data, int size)
 /******************************************/
 {
-	uint_64 fnv_basis = 14695981039346656037;
+	uint_64 fnv_basis = 14695981039346656037ULL;
 	uint_64 register fnv_prime = 1099511628211;
 	uint_64 h = fnv_basis;
 	int cnt = 0;
diff --git a/codegenv2.c b/codegenv2.c
index 6bcc08d..9558fe3 100644
--- a/codegenv2.c
+++ b/codegenv2.c
@@ -34,7 +34,7 @@ struct Instr_Def* InstrHash[16384];
 static unsigned int hash(const uint_8* data, int size)
 /******************************************/
 {
-	uint_64 fnv_basis = 14695981039346656037;
+	uint_64 fnv_basis = 14695981039346656037ULL;
 	uint_64 register fnv_prime = 1099511628211;
 	uint_64 h = fnv_basis;
 	int cnt = 0;
diff --git a/invoke.c b/invoke.c
index 750bd64..bdc40cb 100644
--- a/invoke.c
+++ b/invoke.c
@@ -3192,7 +3192,7 @@ static int ParamIsString(char *pStr, int param, struct dsym* proc) {
 static unsigned int hashpjw(const char *s)
 /******************************************/
 {
-	uint_64 fnv_basis = 14695981039346656037;
+	uint_64 fnv_basis = 14695981039346656037ULL;
 	uint_64 register fnv_prime = 1099511628211;
 	uint_64 h;
 	for (h = fnv_basis; *s; ++s) {
diff --git a/reswords.c b/reswords.c
index 03273f9..e16836d 100644
--- a/reswords.c
+++ b/reswords.c
@@ -970,7 +970,7 @@ static bool  b64bit = FALSE; /* resw tables in 64bit mode? */
 static unsigned get_hash(const char *s, unsigned char size)
 /***********************************************************/
 {
-  uint_64 fnv_basis = 14695981039346656037;
+  uint_64 fnv_basis = 14695981039346656037ULL;
   uint_64 register fnv_prime = 1099511628211;
   uint_64 h;
   for (h = fnv_basis; size; size--) {
diff --git a/symbols.c b/symbols.c
index 1b28fa8..e05e1c2 100644
--- a/symbols.c
+++ b/symbols.c
@@ -155,7 +155,7 @@ static bool structLookup = FALSE;
 static unsigned int hashpjw( const char *s )
 /******************************************/
 {
-	uint_64 fnv_basis = 14695981039346656037;
+	uint_64 fnv_basis = 14695981039346656037ULL;
 	uint_64 register fnv_prime = 1099511628211;
 	uint_64 h;
 	for (h = fnv_basis; *s; ++s) {