diff --git a/src/browser.c b/src/browser.c
index f8904855..5baf93c7 100644
--- a/src/browser.c
+++ b/src/browser.c
@@ -77,8 +77,6 @@ char *do_browser(char *path)
 		present_name = mallocstrcpy(present_name, filelist[selected]);
 	}
 
-	assert(path != NULL && path[strlen(path) - 1] == '/');
-
 	if (dir != NULL) {
 		/* Get the file list, and set longest and width in the process. */
 		read_the_list(path, dir);
@@ -392,8 +390,6 @@ void read_the_list(const char *path, DIR *dir)
 	const struct dirent *nextdir;
 	size_t i = 0, path_len = strlen(path);
 
-	assert(path != NULL && path[strlen(path) - 1] == '/' && dir != NULL);
-
 	longest = 0;
 
 	/* Find the length of the longest filename in the current folder. */
@@ -443,8 +439,6 @@ void read_the_list(const char *path, DIR *dir)
 	 * filelist, so record it. */
 	filelist_len = i;
 
-	assert(filelist != NULL);
-
 	/* Sort the list of names. */
 	qsort(filelist, filelist_len, sizeof(char *), diralphasort);
 
diff --git a/src/files.c b/src/files.c
index 444f8701..fe821119 100644
--- a/src/files.c
+++ b/src/files.c
@@ -1295,8 +1295,6 @@ char *get_full_path(const char *origpath)
 	/* If we didn't find one, then make sure the answer is in the format
 	 * "d_here/d_there". */
 	if (last_slash == NULL) {
-		assert(!path_only);
-
 		d_there_file = d_there;
 		d_there = d_here;
 	} else {
@@ -1515,8 +1513,6 @@ int copy_file(FILE *inn, FILE *out, bool close_out)
 	size_t charsread;
 	int (*flush_out_fnc)(FILE *) = (close_out) ? fclose : fflush;
 
-	assert(inn != NULL && out != NULL && inn != out);
-
 	do {
 		charsread = fread(buf, sizeof(char), BUFSIZ, inn);
 		if (charsread == 0 && ferror(inn)) {
@@ -2420,8 +2416,6 @@ char **username_tab_completion(const char *buf, size_t *num_matches,
 	const struct passwd *userdata;
 #endif
 
-	assert(buf != NULL && num_matches != NULL && buf_len > 0);
-
 	*num_matches = 0;
 
 #ifdef HAVE_PWD_H
@@ -2486,8 +2480,6 @@ char **cwd_tab_completion(const char *buf, bool allow_files,
 		dirname = mallocstrcpy(NULL, present_path);
 	}
 
-	assert(dirname[strlen(dirname) - 1] == '/');
-
 	dir = opendir(dirname);
 
 	if (dir == NULL) {
@@ -2551,9 +2543,6 @@ char *input_tab(char *buf, bool allow_files, size_t *place,
 	size_t num_matches = 0, buf_len;
 	char **matches = NULL;
 
-	assert(buf != NULL && place != NULL && *place <= strlen(buf) &&
-				lastwastab != NULL && refresh_func != NULL && listed != NULL);
-
 	*listed = FALSE;
 
 	/* If the word starts with `~' and there is no slash in the word,
@@ -2610,14 +2599,9 @@ char *input_tab(char *buf, bool allow_files, size_t *place,
 		glued = charalloc(strlen(present_path) + strlen(mzero) + 1);
 		sprintf(glued, "%s%s", present_path, mzero);
 
-		assert(common_len >= *place);
-
-		if (num_matches == 1 && (is_dir(mzero) || is_dir(glued))) {
+		if (num_matches == 1 && (is_dir(mzero) || is_dir(glued)))
 			mzero[common_len++] = '/';
 
-			assert(common_len > *place);
-		}
-
 		if (num_matches > 1 && (common_len != *place || !*lastwastab))
 			beep();
 
diff --git a/src/nano.h b/src/nano.h
index 5b89e33b..4f2d6bfb 100644
--- a/src/nano.h
+++ b/src/nano.h
@@ -120,7 +120,6 @@
 #include <dirent.h>
 #include <regex.h>
 #include <signal.h>
-#include <assert.h>
 
 /* If we aren't using an ncurses with mouse support, exclude any
  * mouse routines, as they are useless then. */