diff --git a/src/bin/lsindex.cpp b/src/bin/lsindex.cpp
index f9ba2e31d9..bb81b5e469 100644
--- a/src/bin/lsindex.cpp
+++ b/src/bin/lsindex.cpp
@@ -148,7 +148,7 @@ print_index_verbose_stat(const index_info &info, char *name)
 
 
 int
-main(int32 argc, char **argv)
+main(int argc, char **argv)
 {
 	dev_t device = dev_for_path(".");
 	DIR *indices = NULL;
diff --git a/src/bin/mkindex.cpp b/src/bin/mkindex.cpp
index bf90255d11..8a20425265 100644
--- a/src/bin/mkindex.cpp
+++ b/src/bin/mkindex.cpp
@@ -94,7 +94,7 @@ usage(int status)
 
 
 int
-main(int32 argc, char **argv)
+main(int argc, char **argv)
 {
 	char *indexTypeName = "string";
 	int indexType = B_STRING_TYPE;
diff --git a/src/bin/query.cpp b/src/bin/query.cpp
index a7c783de82..e520ef0541 100644
--- a/src/bin/query.cpp
+++ b/src/bin/query.cpp
@@ -92,7 +92,7 @@ perform_query(BVolume &volume, const char *predicate)
 
 
 int
-main(int32 argc, char **argv)
+main(int argc, char **argv)
 {
 	// Make sure we have the minimum number of arguments.
 	if (argc < 2)
diff --git a/src/bin/rmattr.cpp b/src/bin/rmattr.cpp
index 5a82ced557..195d762441 100644
--- a/src/bin/rmattr.cpp
+++ b/src/bin/rmattr.cpp
@@ -89,7 +89,7 @@ remove_attribute(int fd, const char* attribute, bool isPattern)
 
 
 int
-main(int32 argc, const char **argv)
+main(int argc, const char **argv)
 {
 	// Make sure we have the minimum number of arguments.
 	if (argc < 3)
diff --git a/src/bin/rmindex.cpp b/src/bin/rmindex.cpp
index fc79914bf4..99489ed220 100644
--- a/src/bin/rmindex.cpp
+++ b/src/bin/rmindex.cpp
@@ -169,7 +169,7 @@ remove_indices(dev_t device, const char* indexPattern, bool verbose)
 
 
 int
-main(int32 argc, char **argv)
+main(int argc, char **argv)
 {
 	bool isPattern = false;
 	bool verbose = false;