diff --git a/repos/libports/lib/import/import-libpcg_random.mk b/repos/libports/lib/import/import-libpcg_random.mk
index dec2f3aa1a..96356e689f 100644
--- a/repos/libports/lib/import/import-libpcg_random.mk
+++ b/repos/libports/lib/import/import-libpcg_random.mk
@@ -1,3 +1,3 @@
 INC_DIR += \
 	$(call select_from_ports,pcg-c)/include/pcg-c \
-	$(call select_from_repositories,/include/pcg-c) \
+	$(call select_from_repositories,include/pcg-c)
diff --git a/repos/libports/lib/mk/spec/arm/libc-gen.mk b/repos/libports/lib/mk/spec/arm/libc-gen.mk
index 17719629c6..f65dda44ee 100644
--- a/repos/libports/lib/mk/spec/arm/libc-gen.mk
+++ b/repos/libports/lib/mk/spec/arm/libc-gen.mk
@@ -20,7 +20,7 @@ SRC_C  += $(filter-out $(FILTER_OUT_C),$(notdir $(wildcard $(LIBC_GEN_ARM_DIR)/*
 # ucontext.h header is taken from the libc API archive).
 #
 CC_OPT_makecontext = -I$(call select_from_ports,libc)/include/libc/sys \
-                     $(addprefix -I,$(call select_from_repositories,/include/libc/sys))
+                     $(addprefix -I,$(call select_from_repositories,include/libc/sys))
 
 vpath % $(LIBC_GEN_ARM_DIR)
 
diff --git a/repos/libports/lib/mk/spec/arm_64/libc-gen.mk b/repos/libports/lib/mk/spec/arm_64/libc-gen.mk
index 5bd025dcfd..11ea992549 100644
--- a/repos/libports/lib/mk/spec/arm_64/libc-gen.mk
+++ b/repos/libports/lib/mk/spec/arm_64/libc-gen.mk
@@ -15,7 +15,7 @@ SRC_C += flt_rounds.c fpgetmask.c fpsetmask.c infinity.c makecontext.c
 # ucontext.h header is taken from the libc API archive).
 #
 CC_OPT_makecontext = -I$(call select_from_ports,libc)/include/libc/sys \
-                     $(addprefix -I,$(call select_from_repositories,/include/libc/sys))
+                     $(addprefix -I,$(call select_from_repositories,include/libc/sys))
 
 vpath %.c $(LIBC_GEN_ARM64_DIR)
 vpath %.S $(LIBC_GEN_ARM64_DIR)