diff --git a/dev-scheme/matchable/matchable-1.2.ebuild b/dev-scheme/matchable/matchable-1.2.ebuild
index dc64318..9c70abd 100644
--- a/dev-scheme/matchable/matchable-1.2.ebuild
+++ b/dev-scheme/matchable/matchable-1.2.ebuild
@@ -15,5 +15,5 @@ RDEPEND="${DEPEND}"
 BDEPEND="dev-vcs/git"
 
 src_compile() {
-        DESTDIR=${D} CHICKEN_INSTALL_PREFIX=${D} chicken-install -l "${WORKDIR}/${P}" -no-install-dependencies
+        DESTDIR=${D} chicken-install -l "${WORKDIR}/${P}" -no-install-dependencies
 }
\ No newline at end of file
diff --git a/dev-scheme/srfi_1/srfi_1-1.4.ebuild b/dev-scheme/srfi_1/srfi_1-1.4.ebuild
index b1110dc..e7dc573 100644
--- a/dev-scheme/srfi_1/srfi_1-1.4.ebuild
+++ b/dev-scheme/srfi_1/srfi_1-1.4.ebuild
@@ -17,5 +17,5 @@ BDEPEND="dev-vcs/git"
 S="${WORKDIR}/srfi-1-${PV}"
 
 src_compile() {
-        DESTDIR=${D} CHICKEN_INSTALL_PREFIX=${D} chicken-install -l "${WORKDIR}/${P}" -no-install-dependencies
+        DESTDIR=${D} chicken-install -l "${WORKDIR}/${P}" -no-install-dependencies
 }
\ No newline at end of file
diff --git a/dev-scheme/srfi_13/srfi_13-1.4.ebuild b/dev-scheme/srfi_13/srfi_13-1.4.ebuild
index f27eb07..0b79929 100644
--- a/dev-scheme/srfi_13/srfi_13-1.4.ebuild
+++ b/dev-scheme/srfi_13/srfi_13-1.4.ebuild
@@ -17,5 +17,5 @@ BDEPEND="dev-vcs/git"
 S="${WORKDIR}/srfi-13-${PV}"
 
 src_compile() {
-        DESTDIR=${D} CHICKEN_INSTALL_PREFIX=${D} chicken-install -l "${WORKDIR}/${P}" -no-install-dependencies
+        DESTDIR=${D} chicken-install -l "${WORKDIR}/${P}" -no-install-dependencies
 }
\ No newline at end of file
diff --git a/dev-scheme/srfi_14/srfi_14-1.4.ebuild b/dev-scheme/srfi_14/srfi_14-1.4.ebuild
index c72732a..eff3fa3 100644
--- a/dev-scheme/srfi_14/srfi_14-1.4.ebuild
+++ b/dev-scheme/srfi_14/srfi_14-1.4.ebuild
@@ -17,5 +17,5 @@ BDEPEND="dev-vcs/git"
 S="${WORKDIR}/srfi-14-${PV}"
 
 src_compile() {
-        DESTDIR=${D} CHICKEN_INSTALL_PREFIX=${D} chicken-install -l "${WORKDIR}/${P}" -no-install-dependencies
+        DESTDIR=${D} chicken-install -l "${WORKDIR}/${P}" -no-install-dependencies
 }
\ No newline at end of file