diff --git a/termenv/style.scm b/termenv/style.scm
index 5e3c32a..91c8851 100644
--- a/termenv/style.scm
+++ b/termenv/style.scm
@@ -13,7 +13,7 @@
             underline
             overline
             blink
-            reverse
+            invert
             cross-out))
 
 (define %RESET "0")
@@ -85,7 +85,7 @@
 (define (underline . s) (cons-seq s %UNDERLINE))
 (define (overline . s) (cons-seq s %OVERLINE))
 (define (blink . s) (cons-seq s %BLINK))
-(define (reverse . s) (cons-seq s %REVERSE))
+(define (invert . s) (cons-seq s %REVERSE))
 (define (cross-out . s) (cons-seq s %CROSS-OUT))
 (define (foreground c . s) (cons-seq s (make-foreground c)))
 (define (background c . s) (cons-seq s (make-background c)))
diff --git a/termenv/unix.scm b/termenv/unix.scm
index dae586e..98a0e92 100644
--- a/termenv/unix.scm
+++ b/termenv/unix.scm
@@ -1,20 +1,19 @@
 (define-module (termenv unix)
-  #:use-module (srfi srfi-98)
   #:export (color-profile))
 
 (define (color-profile port)
   "Get the best color profile supported by the given output port"
   (cond
    ((not (isatty? port)) 'ascii)
-   ((equal? "true" (get-environment-variable "GOOGLE_CLOUD_SHELL")) 'true-color)
-   (else (let ((term (or (get-environment-variable "TERM") ""))
-               (color-term (or (get-environment-variable "COLORTERM") "")))
+   ((equal? "true" (getenv "GOOGLE_CLOUD_SHELL")) 'true-color)
+   (else (let ((term (or (getenv "TERM") ""))
+               (color-term (or (getenv "COLORTERM") "")))
            (cond
             ((or (string-ci=? color-term "24bit")
                  (string-ci=? color-term "truecolor"))
              ;; tmux supports TrueColor, screen only ANSI256
              (if (and (string-prefix-ci? "screen" term)
-                      (not (string-ci=? "tmux" (or (get-environment-variable "TERM_PROGRAM") ""))))
+                      (not (string-ci=? "tmux" (or (getenv "TERM_PROGRAM") ""))))
                  'ansi256
                  'true-color))
             ((or (string-ci=? color-term "yes")
diff --git a/tests/test-screen.scm b/tests/test-screen.scm
index ba870cc..53bb5a1 100644
--- a/tests/test-screen.scm
+++ b/tests/test-screen.scm
@@ -2,9 +2,7 @@
   #:use-module (termenv screen)
   #:use-module (tests utils)
   #:use-module (srfi srfi-64)
-  #:use-module (rnrs io ports)
-  #:use-module (scheme base)
-  #:use-module (ice-9 textual-ports))
+  #:use-module (rnrs io ports))
 
 (test-begin "test-screen")
 
@@ -12,5 +10,4 @@
  "\x1b[0m"
  (reset (current-output-port)))
 
-
 (test-end "test-screen")
diff --git a/tests/test-style.scm b/tests/test-style.scm
index 870b573..46a8d5e 100644
--- a/tests/test-style.scm
+++ b/tests/test-style.scm
@@ -2,9 +2,7 @@
   #:use-module (termenv style)
   #:use-module (tests utils)
   #:use-module (srfi srfi-64)
-  #:use-module (rnrs io ports)
-  #:use-module (scheme base)
-  #:use-module (ice-9 textual-ports))
+  #:use-module (rnrs io ports))
 
 (test-begin "test-style")